cvedb.io
CVE-2026-40930
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-06-04T16:16:36.633 · Last modified 2026-06-17T10:45:54.213

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.