PT-2026-58072 · Pypi · Pillow

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-59204

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Pillow versions 8.2.0 through 12.2.0

Description In the src/libImaging/Jpeg2KDecode.c file, the library accumulates total component width across every tile in a JPEG2000 image instead of recomputing it per tile. This behavior allows a specially crafted tiled JPEG2000 file to cause significantly higher transient memory usage, which can lead to out-of-memory failures during the decoding process.

Recommendations Update to version 12.3.0.

Exploit

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

CWE-789

Related Identifiers

CVE-2026-59204

GHSA-VJC4-5QP5-M44J

Affected Products

Pillow

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59204.json · Exploit
• https://github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11ca · Patch
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j · Vendor Advisory
• https://github.com/python-pillow/Pillow/pull/9704 · Patch
• https://osv.dev/vulnerability/CVE-2026-59204 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-59204 · Security Note
• https://github.com/python-pillow/Pillow/releases/tag/12.3.0 · Note