Bug 2500022 (CVE-2026-59204) - CVE-2026-59204 Pillow: Pillow: Denial of Service via crafted JPEG2000 image
Summary: CVE-2026-59204 Pillow: Pillow: Denial of Service via crafted JPEG2000 image
Keywords:
Status: NEW
Alias: CVE-2026-59204
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-14 16:02 UTC by OSIDB Bzimport
Modified: 2026-07-18 08:28 UTC (History)
56 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-14 16:02:34 UTC 
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.
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