{"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"}}}}

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