Memory Exhaustion Vulnerability in Pillow Imaging Library by Python
CVE-2026-112892

8.7HIGH

Key Information:

Vendor

Python-pillow

Status
Pillow
Vendor
CVE Published:
19 October 2026

What is CVE-2026-112892?

The Pillow imaging library is susceptible to a memory exhaustion issue stemming from its MSP RLE decoder. Versions from 4.1.0 through 12.x can be manipulated by an attacker through crafted MSP image files, resulting in unbounded memory expansion during decoding. This vulnerability allows for denial of service as the decoder fails to enforce limits on the output buffer despite checks meant to identify decompression-bomb scenarios. Users are advised to upgrade to version 13.0.0 or later to mitigate this risk.

Affected Version(s)

Pillow >= 4.1.0, < 13.0.0

References

https://github.com/python-pillow/Pillow/security/advisori...
x_refsource_CONFIRM
https://github.com/python-pillow/Pillow/commit/5dcb630b97...
x_refsource_MISC
https://github.com/python-pillow/Pillow/releases/tag/13.0.0
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.