CVE-2026-25646

Name
CVE-2026-25646
Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is fixed in 1.6.55.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88
security-advisories@github.com https://github.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2026/02/09/7

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* libpng >= None < 1.6.55

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libpng edge-main 1.6.55-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libpng edge-main 1.6.54-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.53-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.51-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.51-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.49-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.47-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.46-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.45-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.44-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng edge-main 1.6.37-r0 None possibly vulnerable
libpng 3.23-main 1.6.55-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libpng 3.23-main 1.6.54-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.23-main 1.6.53-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.22-main 1.6.55-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libpng 3.22-main 1.6.54-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.22-main 1.6.53-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.22-main 1.6.51-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.22-main 1.6.47-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.22-main 1.6.37-r0 None possibly vulnerable
libpng 3.21-main 1.6.55-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libpng 3.21-main 1.6.54-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.21-main 1.6.53-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.21-main 1.6.47-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.21-main 1.6.44-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.21-main 1.6.37-r0 None possibly vulnerable
libpng 3.20-main 1.6.55-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libpng 3.20-main 1.6.54-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.20-main 1.6.53-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.20-main 1.6.44-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.20-main 1.6.37-r0 None possibly vulnerable
libpng 3.19-main 1.6.44-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libpng 3.19-main 1.6.37-r0 None possibly vulnerable