{"id":"CVE-2026-110802","published":"2026-11-05T21:18:35.267","lastModified":"2026-11-05T21:18:35.267","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.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79","CWE-829"],"vendors":[],"products":[],"references":[{"url":"https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e","tags":[]},{"url":"https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9","tags":[]},{"url":"https://github.com/altair-graphql/altair/releases/tag/v8.5.8","tags":[]},{"url":"https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf","tags":[]}],"exploitRefs":[{"url":"https://github.com/altair-graphql/altair/commit/53a19183ce11ca147bb990c355e14ecb1dd7cd3e","tags":[]},{"url":"https://github.com/altair-graphql/altair/commit/bdf422bdaaaf3186170ba7f22e22c259072133d9","tags":[]},{"url":"https://github.com/altair-graphql/altair/releases/tag/v8.5.8","tags":[]},{"url":"https://github.com/altair-graphql/altair/security/advisories/GHSA-752m-7p75-49gf","tags":[]}],"hasPoc":true,"ai":null}