High severity7.5NVD Advisory· Published Jul 14, 2026· Updated Jul 21, 2026
CVE-2026-59200
CVE-2026-59200
Description
Pillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
PillowPyPI | >= 5.1.0, < 12.3.0 | 12.3.0 |
Affected products
21- Range: 5.1.0 - 12.3.0
- osv-coords19 versionspkg:apk/chainguard/label-studiopkg:apk/chainguard/lmcache-cuda-12.8pkg:apk/chainguard/mlflowpkg:apk/chainguard/openstack-horizon-2025.2pkg:apk/chainguard/openstack-horizon-2025.2-fipspkg:apk/chainguard/openstack-horizon-2026.1pkg:apk/chainguard/openstack-horizon-2026.1-fipspkg:apk/chainguard/superset-6.0pkg:apk/chainguard/superset-6.1pkg:apk/chainguard/superset-fips-6.1pkg:apk/chainguard/tensorflow-gpu-jupyterpkg:apk/chainguard/text-generation-inferencepkg:apk/chainguard/tritonserver-backend-vllm-cuda-13.0pkg:apk/wolfi/mlflowpkg:apk/wolfi/superset-6.0pkg:apk/wolfi/superset-6.1pkg:bitnami/pillowpkg:rpm/opensuse/python-Pillow&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python-Pillow&distro=openSUSE%20Tumbleweed
< 1.23.0-r11+ 18 more
- (no CPE)range: < 1.23.0-r11
- (no CPE)range: < 0.5.3-r0
- (no CPE)range: < 3.14.0-r2
- (no CPE)range: < 25.5.2_git20260617-r4
- (no CPE)range: < 25.5.2_git20260617-r5
- (no CPE)range: < 25.7.3_git20260630-r2
- (no CPE)range: < 25.7.3_git20260630-r2
- (no CPE)range: < 6.0.0-r13
- (no CPE)range: < 6.1.0-r6
- (no CPE)range: < 6.1.0-r5
- (no CPE)range: < 2.21.0-r7
- (no CPE)range: < 3.3.7-r20
- (no CPE)range: < 25.11-r11
- (no CPE)range: < 3.14.0-r2
- (no CPE)range: < 6.0.0-r13
- (no CPE)range: < 6.1.0-r6
- (no CPE)range: >= 5.1.0, < 12.3.0
- (no CPE)range: < 11.3.0-160000.8.1
- (no CPE)range: < 12.3.0-2.1
Patches
Vulnerability mechanics
References
6- github.com/python-pillow/Pillow/commit/f7a31ea75e460e108c37126da1f47812f21f6b09nvdPatchWEB
- github.com/python-pillow/Pillow/pull/9718nvdIssue TrackingPatchWEB
- github.com/python-pillow/Pillow/security/advisories/GHSA-jjj6-mw9f-p565nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-jjj6-mw9f-p565ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59200ghsaADVISORY
- github.com/python-pillow/Pillow/releases/tag/12.3.0nvdRelease NotesWEB
News mentions
1- Pillow: Four Denial-of-Service Vulnerabilities Disclosed Together for Python Imaging LibraryVypr Intelligence · Jul 16, 2026