CVE-2026-40930: falha de média gravidade em pnggroup libpng
LIBPNG: Chunk smuggling in push-mode APNG parser via unconsumed chunk body
Publicada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.4epss 0.2%
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVEs relacionadas — pnggroup libpng
No mesmo produto, das mais perigosas para as menos.
CVE-2026-25646HIGHLIBPNG has a heap buffer overflow in png_set_quantizeEPSS 1.1%CVE-2026-33416HIGHLIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`EPSS 1.1%CVE-2026-33636HIGHLIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64EPSS 0.8%CVE-2025-64720HIGHLIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplicationEPSS 0.4%CVE-2025-66293HIGHLIBPNG has an out-of-bounds read in png_image_read_compositeEPSS 0.4%CVE-2025-65018HIGHLIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read`EPSS 0.3%