High 8.7Published Oct 19, 2026

CVE-2026-112397Pillow: Out-of-bounds access in _imagingmorph on a zero-width image

Updated under an hour ago (2026-10-21 05:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for python-pillow Pillow

Exploited in the last 30 days

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.

CVSS: 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Undergoing Analysis
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

python-pillow Pillow python_pillow:pillow (from the name)	before 13.0.0	CNA record

References

https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8x-refsource-confirm
https://github.com/python-pillow/Pillow/commit/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64x-refsource-misc
https://github.com/python-pillow/Pillow/releases/tag/13.0.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.