CVE-2026-112390CWE-835

CVE-2026-112390

High · published October 20, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
28.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.2 · 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
EPSS
0.00358 · 28.4th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-10-20T01:17Z
Affected products (1)
ProductVersionsFixed in
python/pillow≥ 7.2.0, < 13.0.013.0.0
References (4)
https://github.com/python-pillow/Pillow/commit/26cb3ed061173b817b9ee4b6f507cb0e1e293218 · [email protected]https://github.com/python-pillow/Pillow/releases/tag/13.0.0 · [email protected]https://github.com/python-pillow/Pillow/security/advisories/GHSA-22hg-r758-rrw9 · [email protected]https://github.com/python-pillow/Pillow/security/advisories/GHSA-22hg-r758-rrw9 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 20:35Z
    Pillow: Infinite loop in MIC n_frames when the embedded TIFF
    cvelistv5
  • 19 OCT 20:35Z
    Pillow: Infinite loop in MIC n_frames when the embedded TIFF
    cvelistv5