CVE-2026-40930
| 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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| Publication Date |
June 5, 2026, 1:16 a.m. |
| Registration Date |
June 5, 2026, 4:10 a.m. |
| Last Update |
June 5, 2026, 1:23 a.m. |
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CVSS3.1 : MEDIUM
|
| スコア |
5.4
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
なし |
| 完全性への影響(I) |
低 |
| 可用性への影響(A) |
低 |
Related information, measures and tools
Common Vulnerabilities List