## Pillow: Quadratic GIF comment concatenation allows DoS in Image.open()

- 種別: advisory
- 重大度: medium
- 関連技術: python
- CVE: CVE-2026-112401
- 公開日時: 2026-10-21T20:42:11.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-74r2-7ff9-mjj2)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-74r2-7ff9-mjj2

影響: pip:Pillow >= 5.4.0, < 13.0.0 → 13.0.0
============================================================================ Quadratic GIF comment concatenation allows DoS in Image.open() Location: src/PIL/GifImagePlugin.py:266 in GifImageFile._seek() Commit: a707c6b21c313880d0771e54965d142dd42358b6 ============================================================================ Opening a crafted GIF file with Image.open() takes time that grows with the square of the file's size, so anyone who can submit an image to a service that uses Pillow ca…