High 8.2Published Oct 19, 2026

CVE-2026-112390Pillow: Infinite loop in MIC n_frames when the embedded TIFF

Updated under an hour ago (Oct 28, 2026, 7:00 AM ET)

Does this affect you?

It affects python-pillow Pillow and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.59%, higher than 48% of scored CVEs.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for python-pillow Pillow

Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-835
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.59% (percentile 48)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

python-pillow Pillow python_pillow:pillow (from the name)	from 7.2.0, < 13.0.0	CNA record
python pillow python:pillow	from 7.2.0 before 13.0.0	NVD

References

References

https://github.com/python-pillow/Pillow/security/advisories/GHSA-22hg-r758-rrw9	x-refsource-confirm, exploit, patch, vendor-advisory
https://github.com/python-pillow/Pillow/commit/26cb3ed061173b817b9ee4b6f507cb0e1e293218	x-refsource-misc, patch
https://github.com/python-pillow/Pillow/releases/tag/13.0.0	x-refsource-misc, release-notes

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.