High severity7.5NVD Advisory· Published Jul 6, 2026· Updated Jul 7, 2026
CVE-2026-55379
CVE-2026-55379
Description
Pillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow's documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pillowPyPI | < 12.3.0 | 12.3.0 |
Affected products
26- osv-coords23 versionspkg:apk/wolfi/superset-6.0pkg:apk/wolfi/superset-6.1pkg:apk/wolfi/mlflowpkg:apk/chainguard/mlflowpkg:apk/chainguard/openstack-horizon-2026.1-fipspkg:apk/chainguard/superset-fips-6.1pkg:apk/chainguard/text-generation-inferencepkg:apk/chainguard/superset-6.1pkg:apk/chainguard/superset-6.0pkg:apk/chainguard/tritonserver-backend-vllm-cuda-13.0pkg:rpm/almalinux/python3-pillowpkg:rpm/almalinux/python3-pillow-tkpkg:apk/chainguard/openstack-horizon-2026.1pkg:apk/chainguard/openstack-horizon-2025.2pkg:rpm/opensuse/python-Pillow&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python-Pillow&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/python3-pillow-docpkg:rpm/almalinux/python3-pillow-develpkg:apk/chainguard/label-studiopkg:apk/chainguard/lmcache-cuda-12.8pkg:apk/chainguard/openstack-horizon-2025.2-fipspkg:bitnami/pillowpkg:apk/chainguard/tensorflow-gpu-jupyter
< 6.0.0-r13+ 22 more
- (no CPE)range: < 6.0.0-r13
- (no CPE)range: < 6.1.0-r6
- (no CPE)range: < 3.14.0-r2
- (no CPE)range: < 3.14.0-r2
- (no CPE)range: < 25.7.3_git20260630-r2
- (no CPE)range: < 6.1.0-r5
- (no CPE)range: < 3.3.7-r20
- (no CPE)range: < 6.1.0-r6
- (no CPE)range: < 6.0.0-r13
- (no CPE)range: < 25.11-r11
- (no CPE)range: < 5.1.1-22.el8_10
- (no CPE)range: < 5.1.1-22.el8_10
- (no CPE)range: < 25.7.3_git20260630-r2
- (no CPE)range: < 25.5.2_git20260617-r4
- (no CPE)range: < 11.3.0-160000.6.1
- (no CPE)range: < 12.3.0-1.1
- (no CPE)range: < 5.1.1-22.el8_10
- (no CPE)range: < 5.1.1-22.el8_10
- (no CPE)range: < 1.23.0-r11
- (no CPE)range: < 0.5.3-r0
- (no CPE)range: < 25.5.2_git20260617-r5
- (no CPE)range: < 12.3.0
- (no CPE)range: < 2.21.0-r7
- Range: <12.3.0
Patches
Vulnerability mechanics
References
6- github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77dnvdPatchWEB
- github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vcnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-45hq-cxwh-f6vcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-55379ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2255.yamlghsaWEB
- github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rstnvdRelease NotesWEB
News mentions
0No linked articles in our index yet.