## Brotli: Out-of-bounds write in the Brotli decoder ("Node2Shell") also affects the PyPI Brotli package

- 種別: advisory
- 重大度: critical
- 関連技術: python
- 公開日時: 2026-10-22T15:32:49.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-9v8h-qqgm-4m35)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-9v8h-qqgm-4m35

影響: pip:brotli >= 1.0.3, < 1.2.1 → 1.2.1, pip:brotlicffi >= 1.0.3, < 1.2.1.0 → 1.2.1.0
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.