CVE-2026-42311

Pillow: OOB Write with Invalid PSD Tile Extents (Integer Overflow)

CVSS 8.6 HIGHEPSS 0.1%CWE-190 CWE-787

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.6EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

09 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Pillow is a Python imaging library. From version 10.3.0 to before version 12.2.0, processing a malicious PSD file could lead to memory corruption, potentially resulting in a crash or arbitrary code execution. This issue has been patched in version 12.2.0.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

python-pillow · Pillow

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References

https://github.com/python-pillow/Pillow/commit/58f9a1d166dcb0c274807d4423522d205b0c35ea https://github.com/python-pillow/Pillow/pull/9520 https://github.com/python-pillow/Pillow/releases/tag/12.2.0 https://github.com/python-pillow/Pillow/security/advisories/GHSA-pwv6-vv43-88gr