CVE-2026-59204

NameCVE-2026-59204
DescriptionPillow 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1142274

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pillow (PTS)bullseye8.1.2+dfsg-0.3+deb11u2vulnerable
bullseye (security)8.1.2+dfsg-0.3+deb11u3vulnerable
bookworm, bookworm (security)9.4.0-1.1+deb12u1vulnerable
trixie11.1.0-5+deb13u4vulnerable
trixie (security)11.1.0-5+deb13u3vulnerable
forky, sid12.3.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pillowsource(unstable)12.3.0-11142274

Notes

[bookworm] - pillow <postponed> (Minor issue, DoS)
[bullseye] - pillow <ignored> (JPEG2000 support not built)
https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j
https://github.com/python-pillow/Pillow/pull/9704
Intorduced with: https://github.com/python-pillow/Pillow/commit/3bf5eddb89afdf690eceaa52bc4d3546ba9a5f87 (8.2.0)
Fixed by: https://github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11ca (12.3.0)
Introducing commit is the fix for CVE-2021-25287 and CVE-2021-25288

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