Interpretation Conflict Affecting libpng1.6 package, versions <1.6.37-4


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.36% (27th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBPNG16-20335124
  • published30 Sept 2026
  • disclosed4 Jun 2026

Introduced: 4 Jun 2026

CVE-2026-40930  (opens in a new tab)
CWE-436  (opens in a new tab)

How to fix?

Upgrade Echo:latest libpng1.6 to version 1.6.37-4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng1.6 package and not the libpng1.6 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1