{"api_version":"1","generated_at":"2026-10-01T11:10:44+00:00","cve":"CVE-2026-93547","urls":{"html":"https://cve.report/CVE-2026-93547","api":"https://cve.report/api/cve/CVE-2026-93547.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93547","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93547"},"summary":{"title":"Missing Authorization Check in Vaadin Spreadsheet Allows Cell Comments to Be Written to Protected Sheets and Locked Cells","description":"A missing authorization check in the Vaadin Spreadsheet component allows an authenticated user of an application that renders a spreadsheet to add or replace cell comments on a sheet that has protection enabled, including on cells that are locked. Writing a comment to a cell that does not exist yet also creates the row and the cell.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.1.0 - 23.6.13\nVaadin 24.0.0 - 24.9.21\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\nVaadin Framework 7 and 8 with the Spreadsheet add-on 2.0.0 - 3.1.0\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.22\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\nUpgrade the Spreadsheet add-on to 3.1.1\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 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.21 >=24.9.22\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-spreadsheet-flow 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-spreadsheet-flow 24.0.0 - 24.9.21 >=24.9.22\ncom.vaadin:vaadin-spreadsheet-flow 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-spreadsheet-flow 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-spreadsheet-flow 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-spreadsheet 2.0.0 - 3.1.0 >=3.1.1","state":"PUBLISHED","assigner":"Vaadin","published_at":"2026-09-30 14:17:34","updated_at":"2026-09-30 16:38:20"},"problem_types":["CWE-285","CWE-285 CWE-285 Improper Authorization"],"metrics":[{"version":"4.0","source":"security@vaadin.com","type":"Secondary","score":"5.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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:N/PR:L/UI:N/VC:N/VI:L/VA:N/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":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","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":"5.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","data":{"Automatable":"NO","Recovery":"AUTOMATIC","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"CLEAR","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"LOW"}}],"references":[{"url":"https://github.com/vaadin/flow-components/pull/9909","name":"https://github.com/vaadin/flow-components/pull/9909","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/flow-components/pull/9956","name":"https://github.com/vaadin/flow-components/pull/9956","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/flow-components/pull/9907","name":"https://github.com/vaadin/flow-components/pull/9907","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/flow-components/pull/9908","name":"https://github.com/vaadin/flow-components/pull/9908","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/spreadsheet/pull/866","name":"https://github.com/vaadin/spreadsheet/pull/866","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/flow-components/pull/9905","name":"https://github.com/vaadin/flow-components/pull/9905","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/vaadin/flow-components/pull/9910","name":"https://github.com/vaadin/flow-components/pull/9910","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vaadin.com/security/cve-2026-93547","name":"https://vaadin.com/security/cve-2026-93547","refsource":"security@vaadin.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93547","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 23.1.0 23.6.14 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin","version":"affected 24.0.0 24.9.22 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-spreadsheet-flow","version":"affected 23.1.0 23.6.14 maven","platforms":[]},{"source":"CNA","vendor":"vaadin","product":"vaadin-spreadsheet-flow","version":"affected 24.0.0 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Jain"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgba(232, 232, 232, 0.04);\">A missing authorization check in the Vaadin Spreadsheet component allows an authenticated user of an application that renders a spreadsheet to add or replace cell comments on a sheet that has protection enabled, including on cells that are locked. Writing a comment to a cell that does not exist yet also creates the row and the cell.<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 23.1.0 - 23.6.13<br>Vaadin 24.0.0 - 24.9.21<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>Vaadin Framework 7 and 8 with the Spreadsheet add-on 2.0.0 - 3.1.0<br><br>Mitigation<br>Upgrade to 23.6.14<br>Upgrade to 24.9.22<br>Upgrade to 24.10.10<br>Upgrade to 25.1.12<br>Upgrade to 25.2.7 or newer<br>Upgrade the Spreadsheet add-on to 3.1.1<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>23.1.0 - 23.6.13<br></td><td>&ge;23.6.14<br></td></tr><tr><td>com.vaadin:vaadin<br></td><td>24.0.0 - 24.9.21<br></td><td>&ge;24.9.22<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-spreadsheet-flow<br></td><td>23.1.0 - 23.6.13<br></td><td>&ge;23.6.14<br></td></tr><tr><td>com.vaadin:vaadin-spreadsheet-flow<br></td><td>24.0.0 - 24.9.21<br></td><td>&ge;24.9.22<br></td></tr><tr><td>com.vaadin:vaadin-spreadsheet-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-spreadsheet-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-spreadsheet-flow<br></td><td>25.2.0 - 25.2.6<br></td><td>&ge;25.2.7<br></td></tr><tr><td>com.vaadin:vaadin-spreadsheet<br></td><td>2.0.0 - 3.1.0<br></td><td>&ge;3.1.1<br></td></tr></tbody></table><br></span>"}],"value":"A missing authorization check in the Vaadin Spreadsheet component allows an authenticated user of an application that renders a spreadsheet to add or replace cell comments on a sheet that has protection enabled, including on cells that are locked. Writing a comment to a cell that does not exist yet also creates the row and the cell.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.1.0 - 23.6.13\nVaadin 24.0.0 - 24.9.21\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\nVaadin Framework 7 and 8 with the Spreadsheet add-on 2.0.0 - 3.1.0\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.22\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\nUpgrade the Spreadsheet add-on to 3.1.1\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 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.21 >=24.9.22\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-spreadsheet-flow 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-spreadsheet-flow 24.0.0 - 24.9.21 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Abuse"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NO","Recovery":"AUTOMATIC","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"CLEAR","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"LOW"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-285","description":"CWE-285 Improper 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upgrade."}],"source":{"discovery":"EXTERNAL"},"title":"Missing Authorization Check in Vaadin Spreadsheet Allows Cell Comments to Be Written to Protected Sheets and Locked Cells","x_generator":{"engine":"Vulnogram 0.5.0"}}},"cveMetadata":{"assignerOrgId":"9e0f3122-90e9-42d5-93de-8c6b98deef7e","assignerShortName":"Vaadin","cveId":"CVE-2026-93547","datePublished":"2026-09-30T13:13:13.074Z","dateReserved":"2026-09-18T09:22:10.216Z","dateUpdated":"2026-09-30T14:26:02.005Z","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-285","CWE-285 CWE-285 Improper 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Writing a comment to a cell that does not exist yet also creates the row and the cell.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.1.0 - 23.6.13\nVaadin 24.0.0 - 24.9.21\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\nVaadin Framework 7 and 8 with the Spreadsheet add-on 2.0.0 - 3.1.0\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.22\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\nUpgrade the Spreadsheet add-on to 3.1.1\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 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.21 >=24.9.22\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-spreadsheet-flow 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-spreadsheet-flow 24.0.0 - 24.9.21 >=24.9.22\ncom.vaadin:vaadin-spreadsheet-flow 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-spreadsheet-flow 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-spreadsheet-flow 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-spreadsheet 2.0.0 - 3.1.0 >=3.1.1","Type":"Description","Title":"Missing Authorization Check in Vaadin Spreadsheet Allows Cell Co"}]}}}