Memory Allocation with Excessive Size Value Affecting pillow package, versions [8.1.0,13.0.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PILLOW-21277779
- published20 Oct 2026
- disclosed19 Oct 2026
- creditUnknown
Introduced: 19 Oct 2026
NewCVE-2026-112399 (opens in a new tab)How to fix?
Upgrade pillow to version 13.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value via missing decompression bomb checks in the seek() methods of DcxImagePlugin, MicImagePlugin, and MpoImagePlugin. When a multi-frame image file (DCX, MIC, or MPO format) is opened and seeked to a subsequent frame, the image dimensions are not validated against the decompression bomb threshold, allowing an attacker to trigger excessive memory allocation by supplying an image with an oversized frame. This can crash the process handling the image.