Pillow: Heap over-read in WMF/EMF rendering via 16-bit dimension truncation (Windows builds)
影響: pip:Pillow < 13.0.0 → 13.0.0
On Windows builds, Pillow stores EMF and WMF image dimensions without a range check and passes them to the native drawwmf handler. That code sizes its allocation from dimensions truncated into 16-bit header fields but copies the result using the full 32-bit dimensions. A crafted metafile that is wide and short passes the decompression-bomb pixel check yet causes a heap over-read. Details The EMF branch computes the size straight from signed 32-bit header fields and stores it with no positivity…
| CVE | CVE-2026-96644 |
|---|---|
| 情報源 | GitHub Advisory Database |
| 取得日時 | 2026/10/23 05:09 |
| データ | Markdown JSON |
2026/10/23 01:03、GitHub Advisory Databaseが「Pillow: Heap over-read in WMF/EMF rendering via 16-bit dimension truncation (Windows builds)」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「重要」(high) です。関連する技術: Python。CVE: CVE-2026-96644。