CVE-2026-59204
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.39% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-789, CWE-770
- Affected
- python/pillow
- Source
- security-advisories@github.com
References
- https://github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11caPatch
- https://github.com/python-pillow/Pillow/pull/9704Exploit, Issue Tracking, Patch
- https://github.com/python-pillow/Pillow/releases/tag/12.3.0Release Notes
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44jExploit, Vendor Advisory
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44jExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.