Out-of-bounds Write Affecting python3x-pillow package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.4% (34th percentile)

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  • Snyk IDSNYK-RHEL10-PYTHON3XPILLOW-21407905
  • published22 Oct 2026
  • disclosed21 Oct 2026

Introduced: 21 Oct 2026

NewCVE-2026-96778  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 python3x-pillow.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3x-pillow package and not the python3x-pillow package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Pillow is a Python imaging library. From 9.4.0 until 13.0.0, ImagingJpegEncode() in src/libImaging/JpegEncode.c can call jpeg_write_marker() for a JPEG COM comment when an ICC profile has exactly filled the 65536-byte encoder buffer. libjpeg writes one byte before checking the exhausted free_in_buffer counter, which then wraps and permits the attacker-controlled comment and subsequent compressed image data to overwrite adjacent heap memory. Re-saving an untrusted image as JPEG while preserving its ICC profile and forwarded comment can crash the process and may enable code execution in suitable runtime and heap layouts. This issue is fixed in version 13.0.0.

CVSS Base Scores

version 3.1