Information Exposure Affecting libheif package, versions [,1.23.1)
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-CONAN-LIBHEIF-18302850
- published25 Jul 2026
- disclosed21 Jul 2026
- creditUnknown
Introduced: 21 Jul 2026
NewCVE-2026-47247 (opens in a new tab)How to fix?
Upgrade libheif to version 1.23.1 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure via the grid image processing and uninitialized pixel plane allocation. An attacker can access sensitive heap memory contents by uploading a specially crafted AVIF or HEIC file to a server-side image processor, resulting in the exposure of process memory in the transcoded image output.