Buffer overflow in Python-Pillow Pillow
CVE-2026-112395
Pillow is a Python imaging library. From 8.2.0 until 13.0.0, Pillow's tiled-TIFF decoder can read past the tile buffer while copying four-byte pixels. In _decodeTile, libtiff can return a tile allocation smaller than the required row stride multiplied by the tile length, and Pillow's stride-and-copy loop walks beyond that allocation. An attacker can supply a crafted tiled TIFF to an application that loads it. This can expose adjacent heap data in pixels or crash the process. This issue is fixed in version 13.0.0.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Python-Pillow Pillow — versions >= 8.2.0, < 13.0.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-112395?
- CVE-2026-112395 is a medium-severity vulnerability in Python-Pillow Pillow, classified under Heap-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-10-19.
- How severe is CVE-2026-112395?
- Medium severity. CVSS v3 base score is 6.5 out of 10.