{"api_version":"1","generated_at":"2026-10-01T09:00:32+00:00","cve":"CVE-2026-91860","urls":{"html":"https://cve.report/CVE-2026-91860","api":"https://cve.report/api/cve/CVE-2026-91860.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-91860","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-91860"},"summary":{"title":"Prototype Pollution in Vaadin Charts and Component Base via Unfiltered Deep Merge","description":"A prototype pollution vulnerability exists in the deep merge helpers of Vaadin Charts and Vaadin Component Base. Merging an object the application does not control into a chart configuration or into a component's i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.0.0 - 23.6.13\nVaadin 24.0.0 - 24.9.20\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.21\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\n\nPlease note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version.\n\nArtifacts\nMaven coordinates Vulnerable versions Fixed version\ncom.vaadin:vaadin 23.0.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-core 24.7.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin-core 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-core 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-core 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-charts-flow 23.0.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-charts-flow 24.0.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin-charts-flow 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-charts-flow 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-charts-flow 25.2.0 - 25.2.6 >=25.2.7\n\nnpm packages\nnpm package Vulnerable versions Fixed version\n@vaadin/charts 23.0.0 - 23.6.4 >=23.6.5\n@vaadin/charts 24.0.0 - 24.9.17 >=24.9.18\n@vaadin/charts 24.10.0 - 24.10.4 >=24.10.5\n@vaadin/charts 25.0.0 - 25.1.11 >=25.1.12\n@vaadin/charts 25.2.0 - 25.2.8 >=25.2.9\n@vaadin/component-base 24.7.0 - 24.9.17 >=24.9.18\n@vaadin/component-base 24.10.0 - 24.10.4 >=24.10.5\n@vaadin/component-base 25.0.0 - 25.1.11 >=25.1.12\n@vaadin/component-base 25.2.0 - 25.2.8 >=25.2.9","state":"PUBLISHED","assigner":"Vaadin","published_at":"2026-09-30 14:17:34","updated_at":"2026-09-30 16:38:20"},"problem_types":["CWE-1321","CWE-1321 CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')"],"metrics":[{"version":"4.0","source":"security@vaadin.com","type":"Secondary","score":"6.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"6.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","data":{"Automatable":"NO","Recovery":"AUTOMATIC","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"CLEAR","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"LOW"}}],"references":[{"url":"https://github.com/vaadin/web-components/pull/12559","name":"https://github.com/vaadin/web-components/pull/12559","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/web-components/pull/12494","name":"https://github.com/vaadin/web-components/pull/12494","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vaadin.com/security/cve-2026-91860","name":"https://vaadin.com/security/cve-2026-91860","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/web-components/pull/12493","name":"https://github.com/vaadin/web-components/pull/12493","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/web-components/pull/12496","name":"https://github.com/vaadin/web-components/pull/12496","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/web-components/pull/12483","name":"https://github.com/vaadin/web-components/pull/12483","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/web-components/pull/12492","name":"https://github.com/vaadin/web-components/pull/12492","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91860","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91860","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 23.0.0 23.6.14 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 24.0.0 24.9.21 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 24.10.0 24.10.10 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 25.0.0 25.1.12 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 25.2.0 25.2.7 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-core","version":"affected 24.7.0 24.9.21 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-core","version":"affected 24.10.0 24.10.10 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-core","version":"affected 25.0.0 25.1.12 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-core","version":"affected 25.2.0 25.2.7 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-charts-flow","version":"affected 23.0.0 23.6.14 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-charts-flow","version":"affected 24.0.0 24.9.21 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-charts-flow","version":"affected 24.10.0 24.10.10 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-charts-flow","version":"affected 25.0.0 25.1.12 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-charts-flow","version":"affected 25.2.0 25.2.7 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/charts","version":"affected 23.0.0 23.6.5 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/charts","version":"affected 24.0.0 24.9.18 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/charts","version":"affected 24.10.0 24.10.5 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/charts","version":"affected 25.0.0 25.1.12 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/charts","version":"affected 25.2.0 25.2.9 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/component-base","version":"affected 24.7.0 24.9.18 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/component-base","version":"affected 24.10.0 24.10.5 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/component-base","version":"affected 25.0.0 25.1.12 semver","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"@vaadin/component-base","version":"affected 25.2.0 25.2.9 semver","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"Users of affected versions should apply the following mitigation or upgrade.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Ridwan Arefin Islam, Madiba Security Lab, Concordia University","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-91860","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-30T14:26:16.234947Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-30T14:26:23.618Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin","product":"vaadin","repo":"https://github.com/vaadin/platform","vendor":"vaadin","versions":[{"lessThan":"23.6.14","status":"affected","version":"23.0.0","versionType":"maven"},{"lessThan":"24.9.21","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThan":"24.10.10","status":"affected","version":"24.10.0","versionType":"maven"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"maven"},{"lessThan":"25.2.7","status":"affected","version":"25.2.0","versionType":"maven"}]},{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin-core","product":"vaadin-core","repo":"https://github.com/vaadin/platform","vendor":"vaadin","versions":[{"lessThan":"24.9.21","status":"affected","version":"24.7.0","versionType":"maven"},{"lessThan":"24.10.10","status":"affected","version":"24.10.0","versionType":"maven"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"maven"},{"lessThan":"25.2.7","status":"affected","version":"25.2.0","versionType":"maven"}]},{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin-charts-flow","product":"vaadin-charts-flow","repo":"https://github.com/vaadin/flow-components","vendor":"vaadin","versions":[{"lessThan":"23.6.14","status":"affected","version":"23.0.0","versionType":"maven"},{"lessThan":"24.9.21","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThan":"24.10.10","status":"affected","version":"24.10.0","versionType":"maven"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"maven"},{"lessThan":"25.2.7","status":"affected","version":"25.2.0","versionType":"maven"}]},{"collectionURL":"https://registry.npmjs.org","defaultStatus":"unaffected","packageName":"@vaadin/charts","product":"@vaadin/charts","repo":"https://github.com/vaadin/web-components","vendor":"vaadin","versions":[{"lessThan":"23.6.5","status":"affected","version":"23.0.0","versionType":"semver"},{"lessThan":"24.9.18","status":"affected","version":"24.0.0","versionType":"semver"},{"lessThan":"24.10.5","status":"affected","version":"24.10.0","versionType":"semver"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"semver"},{"lessThan":"25.2.9","status":"affected","version":"25.2.0","versionType":"semver"}]},{"collectionURL":"https://registry.npmjs.org","defaultStatus":"unaffected","packageName":"@vaadin/component-base","product":"@vaadin/component-base","repo":"https://github.com/vaadin/web-components","vendor":"vaadin","versions":[{"lessThan":"24.9.18","status":"affected","version":"24.7.0","versionType":"semver"},{"lessThan":"24.10.5","status":"affected","version":"24.10.0","versionType":"semver"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"semver"},{"lessThan":"25.2.9","status":"affected","version":"25.2.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Ridwan Arefin Islam, Madiba Security Lab, Concordia University"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgba(232, 232, 232, 0.04);\">A prototype pollution vulnerability exists in the deep merge helpers of Vaadin Charts and Vaadin Component Base. Merging an object the application does not control into a chart configuration or into a component's i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.<br><br><br>Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:<br><br>Product version<br>Vaadin 23.0.0 - 23.6.13<br>Vaadin 24.0.0 - 24.9.20<br>Vaadin 24.10.0 - 24.10.9<br>Vaadin 25.0.0 - 25.1.11<br>Vaadin 25.2.0 - 25.2.6<br><br>Mitigation<br>Upgrade to 23.6.14<br>Upgrade to 24.9.21<br>Upgrade to 24.10.10<br>Upgrade to 25.1.12<br>Upgrade to 25.2.7 or newer<br><br>Please note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version.<br><br>Artifacts<table><tbody><tr><td>Maven coordinates</td><td>Vulnerable versions</td><td>Fixed version</td></tr><tr><td>com.vaadin:vaadin<br></td><td>23.0.0 - 23.6.13<br></td><td>&ge;23.6.14<br></td></tr><tr><td>com.vaadin:vaadin<br></td><td>24.0.0 - 24.9.20<br></td><td>&ge;24.9.21<br></td></tr><tr><td>com.vaadin:vaadin<br></td><td>24.10.0 - 24.10.9<br></td><td>&ge;24.10.10<br></td></tr><tr><td>com.vaadin:vaadin<br></td><td>25.0.0 - 25.1.11<br></td><td>&ge;25.1.12<br></td></tr><tr><td>com.vaadin:vaadin<br></td><td>25.2.0 - 25.2.6<br></td><td>&ge;25.2.7<br></td></tr><tr><td>com.vaadin:vaadin-core<br></td><td>24.7.0 - 24.9.20<br></td><td>&ge;24.9.21<br></td></tr><tr><td>com.vaadin:vaadin-core<br></td><td>24.10.0 - 24.10.9<br></td><td>&ge;24.10.10<br></td></tr><tr><td>com.vaadin:vaadin-core<br></td><td>25.0.0 - 25.1.11<br></td><td>&ge;25.1.12<br></td></tr><tr><td>com.vaadin:vaadin-core<br></td><td>25.2.0 - 25.2.6<br></td><td>&ge;25.2.7<br></td></tr><tr><td>com.vaadin:vaadin-charts-flow<br></td><td>23.0.0 - 23.6.13<br></td><td>&ge;23.6.14<br></td></tr><tr><td>com.vaadin:vaadin-charts-flow<br></td><td>24.0.0 - 24.9.20<br></td><td>&ge;24.9.21<br></td></tr><tr><td>com.vaadin:vaadin-charts-flow<br></td><td>24.10.0 - 24.10.9<br></td><td>&ge;24.10.10<br></td></tr><tr><td>com.vaadin:vaadin-charts-flow<br></td><td>25.0.0 - 25.1.11<br></td><td>&ge;25.1.12<br></td></tr><tr><td>com.vaadin:vaadin-charts-flow<br></td><td>25.2.0 - 25.2.6<br></td><td>&ge;25.2.7<br></td></tr></tbody></table><br><br>npm packages<table><tbody><tr><td>npm package</td><td>Vulnerable versions</td><td>Fixed version</td></tr><tr><td>@vaadin/charts<br></td><td>23.0.0 - 23.6.4<br></td><td>&ge;23.6.5<br></td></tr><tr><td>@vaadin/charts<br></td><td>24.0.0 - 24.9.17<br></td><td>&ge;24.9.18<br></td></tr><tr><td>@vaadin/charts<br></td><td>24.10.0 - 24.10.4<br></td><td>&ge;24.10.5<br></td></tr><tr><td>@vaadin/charts<br></td><td>25.0.0 - 25.1.11<br></td><td>&ge;25.1.12<br></td></tr><tr><td>@vaadin/charts<br></td><td>25.2.0 - 25.2.8<br></td><td>&ge;25.2.9<br></td></tr><tr><td>@vaadin/component-base<br></td><td>24.7.0 - 24.9.17<br></td><td>&ge;24.9.18<br></td></tr><tr><td>@vaadin/component-base<br></td><td>24.10.0 - 24.10.4<br></td><td>&ge;24.10.5<br></td></tr><tr><td>@vaadin/component-base<br></td><td>25.0.0 - 25.1.11<br></td><td>&ge;25.1.12<br></td></tr><tr><td>@vaadin/component-base<br></td><td>25.2.0 - 25.2.8<br></td><td>&ge;25.2.9<br></td></tr></tbody></table><br></span>"}],"value":"A prototype pollution vulnerability exists in the deep merge helpers of Vaadin Charts and Vaadin Component Base. Merging an object the application does not control into a chart configuration or into a component's i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.0.0 - 23.6.13\nVaadin 24.0.0 - 24.9.20\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.21\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\n\nPlease note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version.\n\nArtifacts\nMaven coordinates Vulnerable versions Fixed version\ncom.vaadin:vaadin 23.0.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-core 24.7.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin-core 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-core 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-core 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-charts-flow 23.0.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-charts-flow 24.0.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin-charts-flow 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-charts-flow 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-charts-flow 25.2.0 - 25.2.6 >=25.2.7\n\nnpm packages\nnpm package Vulnerable versions Fixed version\n@vaadin/charts 23.0.0 - 23.6.4 >=23.6.5\n@vaadin/charts 24.0.0 - 24.9.17 >=24.9.18\n@vaadin/charts 24.10.0 - 24.10.4 >=24.10.5\n@vaadin/charts 25.0.0 - 25.1.11 >=25.1.12\n@vaadin/charts 25.2.0 - 25.2.8 >=25.2.9\n@vaadin/component-base 24.7.0 - 24.9.17 >=24.9.18\n@vaadin/component-base 24.10.0 - 24.10.4 >=24.10.5\n@vaadin/component-base 25.0.0 - 25.1.11 >=25.1.12\n@vaadin/component-base 25.2.0 - 25.2.8 >=25.2.9"}],"impacts":[{"capecId":"CAPEC-77","descriptions":[{"lang":"en","value":"CAPEC-77 Manipulating User-Controlled Variables"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NO","Recovery":"AUTOMATIC","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"CLEAR","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"LOW"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","description":"CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-30T13:13:05.996Z","orgId":"9e0f3122-90e9-42d5-93de-8c6b98deef7e","shortName":"Vaadin"},"references":[{"url":"https://vaadin.com/security/cve-2026-91860"},{"url":"https://github.com/vaadin/web-components/pull/12483"},{"url":"https://github.com/vaadin/web-components/pull/12492"},{"url":"https://github.com/vaadin/web-components/pull/12493"},{"url":"https://github.com/vaadin/web-components/pull/12494"},{"url":"https://github.com/vaadin/web-components/pull/12496"},{"url":"https://github.com/vaadin/web-components/pull/12559"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<b><span style=\"background-color: transparent;\">Users of affected versions should apply the following mitigation or upgrade.</span></b><br>"}],"value":"Users of affected versions should apply the following mitigation or upgrade."}],"source":{"discovery":"UNKNOWN"},"title":"Prototype Pollution in Vaadin Charts and Component Base via Unfiltered Deep Merge","x_generator":{"engine":"Vulnogram 0.5.0"}}},"cveMetadata":{"assignerOrgId":"9e0f3122-90e9-42d5-93de-8c6b98deef7e","assignerShortName":"Vaadin","cveId":"CVE-2026-91860","datePublished":"2026-09-30T13:13:05.996Z","dateReserved":"2026-09-15T09:33:38.900Z","dateUpdated":"2026-09-30T14:26:23.618Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-30 14:17:34","lastModifiedDate":"2026-09-30 16:38:20","problem_types":["CWE-1321","CWE-1321 CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype 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Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"91860","Ordinal":"1","Title":"Prototype Pollution in Vaadin Charts and Component Base via Unfi","CVE":"CVE-2026-91860","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"91860","Ordinal":"1","NoteData":"A prototype pollution vulnerability exists in the deep merge helpers of Vaadin Charts and Vaadin Component Base. Merging an object the application does not control into a chart configuration or into a component's i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.0.0 - 23.6.13\nVaadin 24.0.0 - 24.9.20\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.21\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\n\nPlease note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version.\n\nArtifacts\nMaven coordinates Vulnerable versions Fixed version\ncom.vaadin:vaadin 23.0.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-core 24.7.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin-core 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-core 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-core 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-charts-flow 23.0.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-charts-flow 24.0.0 - 24.9.20 >=24.9.21\ncom.vaadin:vaadin-charts-flow 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-charts-flow 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-charts-flow 25.2.0 - 25.2.6 >=25.2.7\n\nnpm packages\nnpm package Vulnerable versions Fixed version\n@vaadin/charts 23.0.0 - 23.6.4 >=23.6.5\n@vaadin/charts 24.0.0 - 24.9.17 >=24.9.18\n@vaadin/charts 24.10.0 - 24.10.4 >=24.10.5\n@vaadin/charts 25.0.0 - 25.1.11 >=25.1.12\n@vaadin/charts 25.2.0 - 25.2.8 >=25.2.9\n@vaadin/component-base 24.7.0 - 24.9.17 >=24.9.18\n@vaadin/component-base 24.10.0 - 24.10.4 >=24.10.5\n@vaadin/component-base 25.0.0 - 25.1.11 >=25.1.12\n@vaadin/component-base 25.2.0 - 25.2.8 >=25.2.9","Type":"Description","Title":"Prototype Pollution in Vaadin Charts and Component Base via Unfi"}]}}}