5.9
Medium
CVE-2026-112396 Pillow is a Python imaging library
Description
Pillow is a Python imaging library. From 11.3.0 until 13.0.0, Pillow has a heap use-after-free when libtiff rejects a tag while encoding TIFF data to an in-memory buffer. When an application saves attacker-influenced TIFF tags to BytesIO, libtiff can reject a tag during encoding in ImagingLibTiffEncode; the error path then frees the output buffer without closing or clearing the TIFF handle, and later cleanup flushes through the write callback into freed memory, which can crash the process and may enable code execution. This issue is fixed in version 13.0.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Pillow 11.3 | 11.3.0 → < 13.0.0 | 13.0.0 |
Other CVEs of Pillow
The 60 CVEs of Pillow →
CVE-2026-112902
Pillow: Memory disclosure and segfault in libtiff encoder via crafted TIFF tags
8.3
High
CVE-2026-112899
Pillow: EPS load(scale) lets Ghostscript render past the decompression bomb limit
6.3
Medium
CVE-2026-114501
Pillow is a Python imaging library
6.3
Medium
CVE-2026-96639
Pillow is a Python imaging library
9.8
Critical