Heap-based Buffer Overflow Affecting pillow package, versions [11.2.1,12.2.0)
Threat Intelligence
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-16419315
- published5 May 2026
- disclosed4 May 2026
- creditUnknown
Introduced: 4 May 2026
CVE-2026-42309 (opens in a new tab)How to fix?
Upgrade pillow to version 12.2.0 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in ImagePath.Path, ImageDraw.ImageDraw.polygon, and ImageDraw.ImageDraw.line, all of which accept nested coordinates as input. An attacker can cause denial of service by supplying nested lists as coordinates, which are recursively unpacked beyond the allocated buffer.