{"id":"CVE-2026-111497","summary":"Out-of-Bounds Write in Google Brotli Decoder","details":"A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream.\n\n\n\n\n\nUsers need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.","aliases":["BIT-node-2026-111497","BIT-node-min-2026-111497","GHSA-9v8h-qqgm-4m35","PYSEC-2026-4322","PYSEC-2026-4323"],"modified":"2026-10-27T08:42:03.245567277Z","published":"2026-10-22T13:35:41.975Z","related":["ALSA-2026:90449","ALSA-2026:90495","ALSA-2026:90501","openSUSE-SU-2026:12232-1","openSUSE-SU-2026:12248-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111497.json","cna_assigner":"Google","cwe_ids":["CWE-252","CWE-787"]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/23/25"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/24/6"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/26/12"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/26/13"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/10/26/16"},{"type":"WEB","url":"https://broccoli2shell.com"},{"type":"WEB","url":"https://github.com/google/brotli/releases/tag/v1.0.10"},{"type":"WEB","url":"https://github.com/google/brotli/releases/tag/v1.1.1"},{"type":"WEB","url":"https://github.com/google/brotli/releases/tag/v1.2.1"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2026/10/msg00049.html"},{"type":"WEB","url":"https://patchtheplanet.org/brotli"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111497.json"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-9v8h-qqgm-4m35"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111497"},{"type":"REPORT","url":"https://github.com/dotnet/announcements/issues/494"},{"type":"FIX","url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high"},{"type":"PACKAGE","url":"https://github.com/google/brotli"},{"type":"ARTICLE","url":"https://www.aikido.dev/blog/node2shell-nodejs-brotli-rce-cve-2026-111497"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/google/brotli","events":[{"introduced":"533843e3546cd24c8344eaa899c6b0b681c8d222"},{"fixed":"3646606894cd8b8c75d79a569b6c95a33c699d63"},{"introduced":"ed738e842d2fbdf2d6459e39267a633c4a9b2f5d"},{"fixed":"db0631dfea829194206d269bc7b25d0908cdb97d"},{"introduced":"028fb5a23661f123017c060daa546b55cf4bde29"},{"fixed":"db24a98aed38a16de78cc05ca15cdd8dc2a0d92d"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"1.0.3"},{"fixed":"1.0.10"}],"source":"AFFECTED_FIELD"},{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"1.1.0"},{"fixed":"1.1.1"}]},{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"1.2.0"},{"fixed":"1.2.1"}]},{"range":[{"fixed":"db24a98aed38a16de78cc05ca15cdd8dc2a0d92d"}],"source":"REFERENCES_TAG","original_tag":"v1.2.1"},{"original_tag":"v1.1.1","range":[{"fixed":"db0631dfea829194206d269bc7b25d0908cdb97d"}],"source":"REFERENCES_TAG"},{"original_tag":"v1.0.10","range":[{"fixed":"3646606894cd8b8c75d79a569b6c95a33c699d63"}],"source":"REFERENCES_TAG"}]}}],"versions":["v1.0.9","v1.1.0","go/cbrotli/v1.1.0","v1.2.0","v1.0.8","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-111497.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}