| Name | CVE-2026-55380 |
| Description | Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1142274 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pillow (PTS) | bullseye | 8.1.2+dfsg-0.3+deb11u2 | vulnerable |
| bullseye (security) | 8.1.2+dfsg-0.3+deb11u3 | vulnerable | |
| bookworm, bookworm (security) | 9.4.0-1.1+deb12u1 | vulnerable | |
| trixie | 11.1.0-5+deb13u4 | vulnerable | |
| trixie (security) | 11.1.0-5+deb13u3 | vulnerable | |
| forky, sid | 12.3.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pillow | source | (unstable) | 12.3.0-1 | 1142274 |
[trixie] - pillow <no-dsa> (Minor issue)
[bookworm] - pillow <postponed> (Minor issue)
[bullseye] - pillow <postponed> (Minor issue)
https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm
Fixed by: https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675 (12.3.0)