{"id":"CVE-2026-119332","aliases":[],"cve":{"records":[{"id":"CVE-2026-119332","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-29T20:44:30.285Z","published":"2026-10-30T19:57:47.291Z","modified":"2026-10-30T19:57:47.291Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-10-30T19:57:47.291Z"}],"references":[{"url":"https://github.com/LadybirdBrowser/ladybird/security/advisories/GHSA-6cmv-xmff-qjph","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/LadybirdBrowser/ladybird/commit/209579c96473c75bd5eba9701fcadb841a045964","tags":["x_refsource_MISC"],"source":"GitHub_M"}],"weaknesses":[{"id":"CWE-416","description":"CWE-416: Use After Free","source":"GitHub_M"}],"applicability":[],"prioritization":[]},"title":"Ladybird: FinalizationRegistry::cleanup() heap use-after-free via reentrant unregister()","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"Ladybird is a truly independent web browser. Prior to 209579c96473c75bd5eba9701fcadb841a045964, FinalizationRegistry::cleanup() in Libraries/LibJS/Runtime/FinalizationRegistry.cpp removed a dead record from m_records, retained an iterator to the next FinalizationRecord, and then invoked attacker-controlled JavaScript through the cleanup callback. If that callback called unregister() for the next record, remove_by_token() freed the node referenced by the retained iterator, and the next cleanup iteration read its target and held_value fields after free. This reliably crashes instrumented WebContent builds and creates a memory-corruption primitive in production builds. This vulnerability is fixed by commit 209579c96473c75bd5eba9701fcadb841a045964.","score":8.8,"severity":"high","published":"2026-10-30T19:57:47.291Z","modified":"2026-10-30T19:57:47.291Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"LadybirdBrowser","name":"ladybird","platforms":[],"versions":[{"version":"< 209579c96473c75bd5eba9701fcadb841a045964","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-119332"}],"remediation":[],"references":["https://github.com/LadybirdBrowser/ladybird/security/advisories/GHSA-6cmv-xmff-qjph","https://github.com/LadybirdBrowser/ladybird/commit/209579c96473c75bd5eba9701fcadb841a045964"],"sources":[{"name":"CVE","id":"CVE-2026-119332","modified":"2026-10-30T19:57:47.291Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-119332"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8}],"sourceAffected":[],"observedAt":"2026-10-30T20:24:54.383Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T12:10:30.804Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T21:20:31.357Z","attemptedAt":"2026-10-30T21:20:31.357Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-30T21:20:31.480Z","attemptedAt":"2026-10-30T21:20:31.480Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T21:20:31.356Z","attemptedAt":"2026-10-30T21:20:31.356Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-30T21:20:31.229Z","attemptedAt":"2026-10-30T21:20:31.229Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-114396","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114396","modified":"Oct 30, 2026, 7:57:47 PM","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","checkedAt":"2026-10-30T21:20:31.356Z"},{"source":"NVD","id":"CVE-2026-119332","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119332","modified":"2026-10-30T20:17:07.600","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","checkedAt":"2026-10-30T21:20:31.357Z"}],"aiSummary":{"text":"Ladybird browser versions before 209579c96473c75bd5eba9701fcadb841a045964 have a use-after-free weakness in FinalizationRegistry::cleanup(). An attacker with access to the browser's JavaScript callback can cause a crash or memory corruption.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-31T05:16:06.648Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-119332"}]}}