Description
Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7
X_Refsource_Misc x_refsource_misc
https://github.com/python-pillow/Pillow/pull/9519
X_Refsource_Misc x_refsource_misc
https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468
X_Refsource_Misc x_refsource_misc
https://github.com/python-pillow/Pillow/releases/tag/12.2.0
Scores
CVSS v3
5.5
EPSS
0.0001
EPSS Percentile
1.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-835
Status
published
Products (3)
pypi/pillow
4.2.0 - 12.2.0PyPI
python/pillow
4.2.0 - 12.2.0
python-pillow/Pillow
>= 4.2.0, < 12.2.0
Published
May 09, 2026
Tracked Since
May 09, 2026