{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110802","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-14T17:40:14.920Z","datePublished":"2026-11-05T20:41:52.499Z","dateUpdated":"2026-11-05T20:41:52.499Z"},"containers":{"cna":{"title":"Altair: DOM-based XSS via attacker-controlled script URLs in the iframe sandbox","problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-829","lang":"en","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","type":"CWE"}]}],"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"}}],"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"}],"affected":[{"vendor":"altair-graphql","product":"altair","versions":[{"version":">= 7.2.4, < 8.5.8","status":"affected"}]},{"vendor":"altair-graphql","product":"altair-express-middleware","versions":[{"version":">= 7.2.4, < 8.5.8","status":"affected"}]},{"vendor":"altair-graphql","product":"altair-fastify-plugin","versions":[{"version":">= 7.2.4, < 8.5.8","status":"affected"}]},{"vendor":"altair-graphql","product":"altair-koa-middleware","versions":[{"version":">= 7.2.4, < 8.5.8","status":"affected"}]},{"vendor":"altair-graphql","product":"altair-static","versions":[{"version":">= 7.2.4, < 8.5.8","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-05T20:41:52.499Z"},"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."}],"source":{"advisory":"GHSA-752m-7p75-49gf","discovery":"UNKNOWN"}}}}