CVEvulnerability

CVE-2026-40930

5.4 MEDIUM Published 2026-06-04 Modified 2026-07-22 Official page ↗

Status: Awaiting Analysis
Published: 2026-06-04
Last modified: 2026-07-22
Assigner: [email protected]
CVSS 3.1 ([email protected]): 5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Weaknesses: CWE-436

Description

LIBPNG is a reference library for use in applications that process PNG (Portable Network Graphics) raster image files. In version 1.8.0, three inter-frame chunk discard paths in the push-mode APNG parser clear the chunk-header flag without consuming the chunk body and CRC, allowing attacker-controlled bytes inside an ignored ancillary chunk to be reinterpreted as a fresh chunk header on the next call to `png_process_data`. Commit faf06924688b62d7c1654b5ceddedbde66ffadb4 fixes the issue.

Weakness · CWE (1)

CWE-436 Interpretation Conflict weakness

References

https://github.com/pnggroup/libpng/commit/faf06924688b62d7c1654b5ceddedbde66ffadb4 github.com
https://github.com/pnggroup/libpng/security/advisories/GHSA-c4v6-gxrq-6g2x github.com
http://www.openwall.com/lists/oss-security/2026/05/15/21 www.openwall.com

CVE-2026-40930

Description

Related

Weakness · CWE (1)

References