GHSA-9v8h-qqgm-4m35
Suggest an improvement- Source
- https://github.com/advisories/GHSA-9v8h-qqgm-4m35
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9v8h-qqgm-4m35/GHSA-9v8h-qqgm-4m35.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-9v8h-qqgm-4m35
- Downstream
- Published
- 2026-10-22T15:32:49Z
- Modified
- 2026-10-23T19:15:07Z
- Severity
-
- 9.2 (Critical) CVSS_V4 - 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 CVSS Calculator
- Summary
- Brotli: Out-of-bounds write in the Brotli decoder ("Node2Shell") also affects the PyPI Brotli package
- 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.
Users 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.
- Database specific
{ "cwe_ids": [ "CWE-252" ], "github_reviewed": true, "github_reviewed_at": "2026-10-23T19:08:08Z", "nvd_published_at": "2026-10-22T14:17:37Z", "severity": "CRITICAL" }- References
-
- 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
Affected packages
PyPI / brotli
Package
- Name
- brotli
- View open source insights on deps.dev
- Purl
- pkg:pypi/brotli
PyPI / brotlicffi
Package
- Name
- brotlicffi
- View open source insights on deps.dev
- Purl
- pkg:pypi/brotlicffi