{"api_version":"1","generated_at":"2026-11-08T16:02:58+00:00","cve":"CVE-2026-110802","urls":{"html":"https://cve.report/CVE-2026-110802","api":"https://cve.report/api/cve/CVE-2026-110802.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-110802","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-110802"},"summary":{"title":"Altair: DOM-based XSS via attacker-controlled script URLs in the iframe sandbox","description":"Altair is a GraphQL client for all platforms. From 7.2.4 until 8.5.8, packages/altair-iframe-sandbox/src/main.ts reads plugin_sandbox_opts from the iframe-sandbox query string and passes attacker-controlled scriptUrls to injectScript() in packages/altair-core/src/utils/inject.ts, which creates script elements in the page. The intended parent iframe flow places the page in an iframe with sandbox allow-scripts and without allow-same-origin, but direct navigation to a crafted iframe-sandbox URL omits that isolation and executes the supplied script in the origin serving Altair. Exploitation requires a victim to open the crafted URL, and the resulting script can access script-readable storage and make same-origin requests according to the deployment's authentication and cookie controls. This issue is fixed in version 8.5.8.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-11-05 21:18:35","updated_at":"2026-11-05 21:18:35"},"problem_types":["CWE-79","CWE-829","CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","CWE-829 CWE-829: Inclusion of Functionality from Untrusted Control Sphere"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"6.1","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"6.1","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/altair-graphql/altair/releases/tag/v8.5.8","name":"https://github.com/altair-graphql/altair/releases/tag/v8.5.8","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9","name":"https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf","name":"https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e","name":"https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110802","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110802","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"altair-graphql","product":"altair","version":"affected >= 7.2.4, < 8.5.8","platforms":[]},{"source":"CNA","vendor":"altair-graphql","product":"altair-express-middleware","version":"affected >= 7.2.4, < 8.5.8","platforms":[]},{"source":"CNA","vendor":"altair-graphql","product":"altair-fastify-plugin","version":"affected >= 7.2.4, < 8.5.8","platforms":[]},{"source":"CNA","vendor":"altair-graphql","product":"altair-koa-middleware","version":"affected >= 7.2.4, < 8.5.8","platforms":[]},{"source":"CNA","vendor":"altair-graphql","product":"altair-static","version":"affected >= 7.2.4, < 8.5.8","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"altair","vendor":"altair-graphql","versions":[{"status":"affected","version":">= 7.2.4, < 8.5.8"}]},{"product":"altair-express-middleware","vendor":"altair-graphql","versions":[{"status":"affected","version":">= 7.2.4, < 8.5.8"}]},{"product":"altair-fastify-plugin","vendor":"altair-graphql","versions":[{"status":"affected","version":">= 7.2.4, < 8.5.8"}]},{"product":"altair-koa-middleware","vendor":"altair-graphql","versions":[{"status":"affected","version":">= 7.2.4, < 8.5.8"}]},{"product":"altair-static","vendor":"altair-graphql","versions":[{"status":"affected","version":">= 7.2.4, < 8.5.8"}]}],"descriptions":[{"lang":"en","value":"Altair is a GraphQL client for all platforms. From 7.2.4 until 8.5.8, packages/altair-iframe-sandbox/src/main.ts reads plugin_sandbox_opts from the iframe-sandbox query string and passes attacker-controlled scriptUrls to injectScript() in packages/altair-core/src/utils/inject.ts, which creates script elements in the page. The intended parent iframe flow places the page in an iframe with sandbox allow-scripts and without allow-same-origin, but direct navigation to a crafted iframe-sandbox URL omits that isolation and executes the supplied script in the origin serving Altair. Exploitation requires a victim to open the crafted URL, and the resulting script can access script-readable storage and make same-origin requests according to the deployment's authentication and cookie controls. This issue is fixed in version 8.5.8."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-829","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-05T20:41:52.499Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf"},{"name":"https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e","tags":["x_refsource_MISC"],"url":"https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e"},{"name":"https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9","tags":["x_refsource_MISC"],"url":"https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9"},{"name":"https://github.com/altair-graphql/altair/releases/tag/v8.5.8","tags":["x_refsource_MISC"],"url":"https://github.com/altair-graphql/altair/releases/tag/v8.5.8"}],"source":{"advisory":"GHSA-752m-7p75-49gf","discovery":"UNKNOWN"},"title":"Altair: DOM-based XSS via attacker-controlled script URLs in the iframe sandbox"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-110802","datePublished":"2026-11-05T20:41:52.499Z","dateReserved":"2026-10-14T17:40:14.920Z","dateUpdated":"2026-11-05T20:41:52.499Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-05 21:18:35","lastModifiedDate":"2026-11-05 21:18:35","problem_types":["CWE-79","CWE-829","CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","CWE-829 CWE-829: Inclusion of Functionality from Untrusted Control Sphere"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"110802","Ordinal":"1","Title":"Altair: DOM-based XSS via attacker-controlled script URLs in the","CVE":"CVE-2026-110802","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"110802","Ordinal":"1","NoteData":"Altair is a GraphQL client for all platforms. From 7.2.4 until 8.5.8, packages/altair-iframe-sandbox/src/main.ts reads plugin_sandbox_opts from the iframe-sandbox query string and passes attacker-controlled scriptUrls to injectScript() in packages/altair-core/src/utils/inject.ts, which creates script elements in the page. The intended parent iframe flow places the page in an iframe with sandbox allow-scripts and without allow-same-origin, but direct navigation to a crafted iframe-sandbox URL omits that isolation and executes the supplied script in the origin serving Altair. Exploitation requires a victim to open the crafted URL, and the resulting script can access script-readable storage and make same-origin requests according to the deployment's authentication and cookie controls. This issue is fixed in version 8.5.8.","Type":"Description","Title":"Altair: DOM-based XSS via attacker-controlled script URLs in the"}]}}}