{"action":"Upgrade brotli to 1.2.1 or later.","affected":[{"fixed":"1.2.1","introduced":"1.0.3"}],"component":"brotli","cve_ids":["CVE-2026-111497"],"ecosystem":"PyPI","epss":0.82641,"exploited":true,"fixed_versions":["1.2.1"],"ghsa_id":"GHSA-9v8h-qqgm-4m35","id":"tcs_01M5N3BVDHJVJ6A01CQ5VKCJ00","modified_at":"2026-11-03T17:15:03.998487530Z","published_at":"2026-10-22T15:32:49Z","references":["https://osv.dev/vulnerability/GHSA-9v8h-qqgm-4m35","https://nvd.nist.gov/vuln/detail/CVE-2026-111497","https://github.com/google/brotli/commit/0ed4268a4401abcb4472096340477cf4af7d1a2b","https://github.com/google/brotli/commit/50a9b70a4d5e1443fc40927952276b68fffa83a0","https://github.com/google/brotli/commit/b418fa81c48262a86a95332b0bc6d62c30aa78b6","https://github.com/google/brotli/commit/da9806362874b9bd4b552a3af360b5d6347beb12","https://www.cve.org/CVERecord?id=CVE-2026-111497","https://pypi.org/project/brotlicffi","https://pypi.org/project/Brotli","https://opensourcemalware.com/blog/node2shell-affects-python","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","https://nodejs.org/en/blog/vulnerability/october-2026-security-releases","https://github.com/pypa/advisory-database/tree/main/vulns/brotlicffi/PYSEC-2026-4323.yaml","https://github.com/pypa/advisory-database/tree/main/vulns/brotli/PYSEC-2026-4322.yaml","https://github.com/google/brotli/releases/tag/v1.2.1","https://github.com/google/brotli/releases/tag/v1.1.1","https://github.com/google/brotli/releases/tag/v1.0.10","https://github.com/google/brotli","https://github.com/dotnet/announcements/issues/494","https://lists.debian.org/debian-lts-announce/2026/10/msg00049.html","https://patchtheplanet.org/brotli","https://www.aikido.dev/blog/node2shell-nodejs-brotli-rce-cve-2026-111497","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111497","https://github.com/andybalholm/brotli/releases/tag/v1.2.7","https://github.com/advisories/GHSA-9v8h-qqgm-4m35","https://ellio.tech/en/blog/node2shell-cve-2026-111497-rce-on-stock-nodejs-builds","https://cert-portal.siemens.com/productcert/html/ssa-898633.html","https://cert-portal.siemens.com/productcert/html/ssa-443410.html","https://cert-portal.siemens.com/productcert/html/ssa-045512.html","https://broccoli2shell.com","http://www.openwall.com/lists/oss-security/2026/10/23/25","http://www.openwall.com/lists/oss-security/2026/10/24/6","http://www.openwall.com/lists/oss-security/2026/10/26/12","http://www.openwall.com/lists/oss-security/2026/10/26/13","http://www.openwall.com/lists/oss-security/2026/10/26/16"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-9v8h-qqgm-4m35","url":"https://osv.dev/vulnerability/GHSA-9v8h-qqgm-4m35"},{"source":"nvd","source_id":"CVE-2026-111497","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111497"},{"source":"kev","source_id":"CVE-2026-111497","url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json"}],"summary":"Brotli: Out-of-bounds write in the Brotli decoder (\"Node2Shell\") also affects the PyPI Brotli package"}