Use After Free Affecting libpng package, versions [,1.6.59)
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Test your applications- Snyk IDSNYK-CONAN-LIBPNG-21198344
- published18 Oct 2026
- disclosed29 Sept 2026
- creditUnknown
Introduced: 29 Sep 2026
NewCVE-2026-46675 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade libpng to version 1.6.59 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the png_read_end process when it is called without reading image rows. An attacker can cause an application crash by supplying a specially crafted PNG image that triggers incomplete decompression of certain metadata chunks, leaving a dangling pointer in the internal decompression state. This is only exploitable if the application invokes cleanup routines prior to row processing, which is uncommon in standard deployments.