CVE WatchJul 21, 2026

CVE-2026-59204

Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every

CVSS

7.5

High

EPSS

0.4%

p33

KEV

—

Exploit Today

0-100

Published: Jul 14, 2026 · Last modified: Jul 21, 2026 · CWE-789 · CWE-770

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-08-242026-09-22

Technical description

Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.

Official references

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