CVE-2026-59199
Pillow: Pillow: Denial of Service via out-of-bounds write in image processing
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 15, 2026
Updated · October 15, 2026
Description
A flaw was found in Pillow, a Python imaging library. A remote attacker could exploit a vulnerability in the library's image processing functions, specifically when handling image coordinates near certain limits. This flaw, a native heap out-of-bounds write, could lead to a denial of service (DoS), making the affected system or application unavailable.
Statement
The impact is limited to denial of service. While the underlying issue is a heap out-of-bounds write, it does not provide a controlled write primitive exploitable for code execution in affected Red Hat products.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-190 · Integer Overflow or Wraparound