CVE catalog
CVE-2026-96642
pillow: CVE-2026-96642
- Severity
- High · CVSS 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
Pillow is a Python imaging library. Prior to 13.0.0, the TarIO initializer in src/PIL/TarIO.py accepts a negative octal member size and computes a backward seek that returns to the same 512-byte header. When the requested member name does not match, the parser repeatedly reads that header, consumes a full CPU core, and never returns. TarIO is reached only when an application directly uses PIL.TarIO.TarIO rather than the default Image.open() path. This issue is fixed in version 13.0.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pillow | sid | 13.0.0-1 | fixed |
| Debian | pillow | forky | 12.3.0-1 | vulnerable |
| Debian | pillow | trixie | 11.1.0-5+deb13u4 | vulnerable |
| Debian | pillow | trixie-security | 11.1.0-5+deb13u3 | vulnerable |
| Debian | pillow | bookworm | 9.4.0-1.1+deb12u1 | vulnerable |
| Debian | pillow | bookworm-security | 9.4.0-1.1+deb12u1 | vulnerable |
| Ubuntu | pillow | pro | 6.1.0-1 | vulnerable |
| Ubuntu | pillow | pro | 6.1.0-1build1 | vulnerable |
| Ubuntu | pillow | pro | 6.2.1-2 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4build1 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.1 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.2 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.3 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.4 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.5 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.6 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.7 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.8 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.9 | vulnerable |
| Ubuntu | pillow | pro | 7.0.0-4ubuntu0.9+esm1 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3~build1 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3ubuntu0.1~esm1 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3ubuntu0.1~esm2 | vulnerable |
| Ubuntu | pillow | 22.04 | 8.1.2+dfsg-0.3 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.0-1 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1build1 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1ubuntu0.1 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1ubuntu0.2 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1ubuntu0.3 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1ubuntu0.4 | vulnerable |
| Ubuntu | pillow | 22.04 | 9.0.1-1ubuntu0.5 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.0.0-1 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.1.0-1 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.2.0-1 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.2.0-1build1 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.2.0-1ubuntu1 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.2.0-1ubuntu1.2 | vulnerable |
| Ubuntu | pillow | 24.04 | 10.2.0-1ubuntu1.3 | vulnerable |
| Ubuntu | pillow | 26.10 | 12.1.1-2ubuntu1 | vulnerable |
| Ubuntu | pillow | 26.10 | 12.3.0-1ubuntu1 | vulnerable |
| Ubuntu | pillow | 26.04 | 11.3.0-1ubuntu1 | vulnerable |
| Ubuntu | pillow | 26.04 | 11.3.0-1ubuntu2 | vulnerable |
| Ubuntu | pillow | 26.04 | 12.0.0-1ubuntu1 | vulnerable |
| Ubuntu | pillow | 26.04 | 12.1.1-1ubuntu1 | vulnerable |
| Ubuntu | pillow | 26.04 | 12.1.1-2ubuntu1 | vulnerable |
| Ubuntu | pillow | 26.04 | 12.1.1-2ubuntu1.1 | vulnerable |
| Ubuntu | pillow | 26.04 | 12.1.1-2ubuntu1.2 | vulnerable |
| Ubuntu | pillow | 26.04 | 12.1.1-2ubuntu1.3 | vulnerable |
| Cpe | pillow | Not reported | 13.0.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pillow | source | sid | 13.0.0-1 | not yet assigned | Not reported | Not reported |
| Debian | pillow | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pillow | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pillow | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | pillow | cpe | Not reported | 13.0.0 | Not reported | NVD-CVE-2026-96642 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-pil]Affected
Source package: [pillow]
Details (4)
9.4.0-1.1+deb12u1· amd64 · bookwormAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookwormAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· amd64 · bookworm-securityAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookworm-securityAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
- [python3-pil.imagetk]Affected
Source package: [pillow]
Details (4)
9.4.0-1.1+deb12u1· amd64 · bookwormAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookwormAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· amd64 · bookworm-securityAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookworm-securityAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
- [python-pil-doc]Affected
Source package: [pillow]
Details (4)
9.4.0-1.1+deb12u1· all · bookwormAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· all · bookwormAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· all · bookworm-securityAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· all · bookworm-securityAffected
dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
[Debian 13 (Trixie)]
- [python3-pil]Affected
Source package: [pillow]
Details (4)
11.1.0-5+deb13u4· amd64 · trixieAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u4· arm64 · trixieAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u3· amd64 · trixie-securityAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u3· arm64 · trixie-securityAffected
dsa · pillow · debian · 13
- [python3-pil.imagetk]Affected
Source package: [pillow]
Details (4)
11.1.0-5+deb13u4· amd64 · trixieAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u4· arm64 · trixieAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u3· amd64 · trixie-securityAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u3· arm64 · trixie-securityAffected
dsa · pillow · debian · 13
- [python-pil-doc]Affected
Source package: [pillow]
Details (4)
11.1.0-5+deb13u4· all · trixieAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u4· all · trixieAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u3· all · trixie-securityAffected
dsa · pillow · debian · 13
11.1.0-5+deb13u3· all · trixie-securityAffected
dsa · pillow · debian · 13
Observed:
References
- [https://github.com/python-pillow/Pillow/commit/19b695fdcc5eddc37374e2b1645fc4185edaf71d]
- [https://github.com/python-pillow/Pillow/pull/10012]
- [https://github.com/python-pillow/Pillow/releases/tag/13.0.0]
- [https://github.com/python-pillow/Pillow/security/advisories/GHSA-3j72-p6qg-6xp7]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-96642]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-96642]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-96642]
- [https://security-tracker.debian.org/tracker/CVE-2026-96642]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96642.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]