CVE-2026-42310

pillow: Pillow is a Python imaging library

CVE-2026-42310 is fixed in 10 products on 1 platform, first by python3-pil 9.0.1-1ubuntu0.4, released May 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0017
6th percentile

Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.

Where it's fixed

ProductFixed inFixReleased
Linux
pillow · Debian 13.5 (trixie) 11.1.0-5+deb13u3 DEBIAN-CVE-2026-42310 May 15, 2026
pillow · Debian 14 12.2.0-1 DEBIAN-CVE-2026-42310 May 15, 2026
python-pillow-debuginfo · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026
python-pillow-debugsource · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026
python3-pil · Ubuntu 22.04.1 LTS (jammy) 9.0.1-1ubuntu0.4 python3-pil 9.0.1-1ubuntu0.4 May 8, 2026
python3-pil · Ubuntu 24.04.5 LTS (noble) 10.2.0-1ubuntu1.2 python3-pil 10.2.0-1ubuntu1.2 May 8, 2026
python3-pil · Ubuntu 25.10 (questing) 11.3.0-1ubuntu1.3 python3-pil 11.3.0-1ubuntu1.3 May 8, 2026
python3-pil · Ubuntu 26.04.1 LTS (resolute) 12.1.1-2ubuntu1.2 python3-pil 12.1.1-2ubuntu1.2 May 8, 2026
python3-pil.imagetk · Ubuntu 22.04.1 LTS (jammy) 9.0.1-1ubuntu0.4 python3-pil.imagetk 9.0.1-1ubuntu0.4 May 8, 2026
python3-pil.imagetk · Ubuntu 24.04.5 LTS (noble) 10.2.0-1ubuntu1.2 python3-pil.imagetk 10.2.0-1ubuntu1.2 May 8, 2026
python3-pil.imagetk · Ubuntu 25.10 (questing) 11.3.0-1ubuntu1.3 python3-pil.imagetk 11.3.0-1ubuntu1.3 May 8, 2026
python3-pil.imagetk · Ubuntu 26.04.1 LTS (resolute) 12.1.1-2ubuntu1.2 python3-pil.imagetk 12.1.1-2ubuntu1.2 May 8, 2026
python3-pillow · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026
python3-pillow-debuginfo · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026
python3-pillow-devel · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026
python3-pillow-tk · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026
python3-pillow-tk-debuginfo · amzn 2023 9.4.0-2.amzn2023.0.8 ALAS2023-2026-1712 May 25, 2026

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