Out-of-bounds Read Affecting pillow-heif package, versions [,1.3.0)
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-PILLOWHEIF-15426536
- published5 Mar 2026
- disclosed28 Feb 2026
- creditkaizawa97
Introduced: 28 Feb 2026
CVE-2026-28231 (opens in a new tab)How to fix?
Upgrade pillow-heif to version 1.3.0 or higher.
Overview
pillow-heif is a Python interface for libheif library
Affected versions of this package are vulnerable to Out-of-bounds Read via the _CtxWriteImage_add_plane() function. An attacker can cause information disclosure or process crashes by supplying large image dimensions that bypass buffer bounds checks.