PyPI/pillow CVE-2026-55380: high 7.5, EPSS 0.42%

Pillow `GdImageFile._open()`: image dimensions accepted without `_decompression_bomb_check()`

Action: Upgrade pillow to 12.3.0 or later.

pip install pillow==12.3.0

Affected

Fixed versions

Sources

• osv: GHSA-phj9-mv4w-65pm
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm
• https://nvd.nist.gov/vuln/detail/CVE-2026-55380
• https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675
• https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2256.yaml
• https://github.com/python-pillow/Pillow
• https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst

CVE-2026-55380 · published 2026-07-20T21:13:35Z · modified 2026-09-10T03:51:11.734605509Z · JSON