CVE-2026-112390

UNKNOWN 0.0

Pillow: Infinite loop in MIC n_frames when the embedded TIFF

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Pillow is a Python imaging library. From 7.2.0 until 13.0.0, Pillow can enter an infinite loop while determining the frame count of a MIC image. MicImageFile inherits TIFF frame traversal, but MicImageFile.tell reports the OLE stream index and its seek() resets TIFF frame state, so an embedded TIFF with at least three IFDs never advances. When an application with olefile installed reads n_frames or saves all frames from a crafted MIC file, the non-advancing traversal can hold a worker at full CPU indefinitely. This issue is fixed in version 13.0.0.

CWE	CWE-835
Vendor	python-pillow
Product	pillow
Published	Oct 19, 2026

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Affected Versions

python-pillow / Pillow

>= 7.2.0, < 13.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/python-pillow/Pillow/security/advisories/GHSA-22hg-r758-rrw9 github.com: https://github.com/python-pillow/Pillow/commit/26cb3ed061173b817b9ee4b6f507cb0e1e293218 github.com: https://github.com/python-pillow/Pillow/releases/tag/13.0.0