CVE-2026-59204 — Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service
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 r…
Published: 2026-07-14 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7