Em resumo
- CVE-2026-112891 é uma vulnerabilidade ALTO (CVSS 7.5) que afeta pillow, pillow (python).
- Chance de exploração nos próximos 30 dias (EPSS): 0.55%, maior que 46.0% das vulnerabilidades.
- Correção: atualize para 13.0.0 ou posterior.
| Package | Affected versions | Patched versions |
|---|
| pillow PyPI | ≥ 9.2.0, < 13.0.0
| 13.0.0
|
| pillow | ≥ 9.2.0, < 13.0.0
| 13.0.0
|
Description
On Pillow 12.3.0 and upstream main (ad277e2761b489681e71b51e91367d46b0ceabb9), a GIF with a long comment makes _get_global_header() copy portions of the comment repeatedly when saving, including comments carried over from untrusted images. I suggest provisional Moderate severity for crafted-image CPU denial of service, with CVSS-B 6.9 assuming a network service automatically opens unauthenticated uploads and they are resaved as GIFs; impact depends on input-size, concurrency, and worker CPU limits.
NVD description
Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow performs quadratic copying when saving a GIF with a long comment. _get_global_header() repeatedly copies portions of comment data while assembling the global header, including comments retained from an untrusted input image. An attacker can supply an image with a large GIF comment to an application that saves it as GIF. This can consume excessive CPU and delay or deny service. This issue is fixed in version 13.0.0.
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