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9.2

Pillow image library can be tricked into crashing

CVE-2020-11538 · published 4 days ago
Summary

The Pillow package used in Python applications has a flaw that could let specially crafted image files cause the program to stop working or behave unexpectedly. This affects systems that use Pillow, such as Python environments on Fedora and Ubuntu. Install the latest Pillow release to fix the issue.

What to do
  • Update jeffrey 'alex' clark pillow to version 7.1.0.
  • Update pillow to version 7.0.0+aikido.2.
  • Update pillow to version 7.0.0+aikido.3.
Affected software
Ecosystem VendorProductAffected versions
pip jeffrey 'alex' clark pillow < 7.1.0
Fix: upgrade to 7.1.0
– python pillow <= 7.0.0
cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
– fedoraproject fedora 31
32
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
– canonical ubuntu_linux 16.04
18.04
20.04
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Root:PyPI – pillow < 7.0.0+aikido.2
< 7.0.0+aikido.3
Fix: upgrade to 7.0.0+aikido.2
Original advisory text
CVE-2020-11538 in pillow - Patched by Root
Root has patched CVE-2020-11538 in the pillow package for Root:PyPI. Multiple fixed versions available.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.2 Critical
Exploitation
2% chance of attack within 30 days
Type
CWE-125Out-of-bounds Read
Timeline
Published5 Nov 2026
Updated8 Nov 2026
First seen6 Mar 2026
Sources
GHSA-43fq-w8qq-v88h · GHSA
CVE-2020-11538 · NVD
ROOT-APP-PYPI-CVE-2020-11538 · OSV
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