Pillow: Decompression-bomb protection bypass via multi-frame seek() in MPO and DCX (MpoImageFile.seek / DcxImageFile.seek)
影響: pip:Pillow < 13.0.0 → 13.0.0
Pillow's decompression-bomb protection (Image._decompression_bomb_check, gated by Image.MAX_IMAGE_PIXELS) is enforced only on the first frame, inside Image.open(). For multi-frame formats, seek() re-parses the target frame's header and resets self._size. GifImagePlugin and TiffImagePlugin re-run the bomb check on seek(), but MpoImageFile.seek() and DcxImageFile.seek() do not. A crafted MPO or DCX whose first frame is tiny (passing the check) but whose later frame declares enormous dimensions th…
Read on GitHub Advisory Database
| CVE | CVE-2026-96636 |
|---|---|
| Source | GitHub Advisory Database |
| Fetched | 10/23/2026, 05:09 AM |
| Data | Markdown JSON |
On 10/23/2026, 12:56 AM, GitHub Advisory Database published "Pillow: Decompression-bomb protection bypass via multi-frame seek() in MPO and DCX (MpoImageFile.seek / DcxImageFile.seek)" (type: Advisory). Severity is "Medium" (medium). Related technologies: Python. CVE: CVE-2026-96636.