High severity8.1NVD Advisory· Published Feb 10, 2026· Updated Aug 11, 2026
CVE-2026-25646
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
51- osv-coords48 versionspkg:apk/chainguard/libpngpkg:apk/wolfi/libpngpkg:rpm/almalinux/libpngpkg:rpm/almalinux/libpng-develpkg:rpm/almalinux/libpng12pkg:rpm/almalinux/libpng15pkg:rpm/almalinux/mingw32-libpngpkg:rpm/almalinux/mingw32-libpng-staticpkg:rpm/almalinux/mingw64-libpngpkg:rpm/almalinux/mingw64-libpng-staticpkg:rpm/opensuse/libpng12&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/libpng12&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/libpng16&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/libpng16&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/libpng16&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.2
< 1.6.55-r0+ 47 more
- (no CPE)range: < 1.6.55-r0
- (no CPE)range: < 1.6.55-r0
- (no CPE)range: < 2:1.6.37-12.el9_7.2
- (no CPE)range: < 2:1.6.37-12.el9_7.2
- (no CPE)range: < 1.2.57-6.el8_10
- (no CPE)range: < 1.5.30-14.el9_7.1
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.59-6.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.44-160000.5.1
- (no CPE)range: < 1.6.55-1.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.50-20.9.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.50-20.9.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.8-15.18.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.8-15.18.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.43-3.1
- (no CPE)range: < 1.6.43-slfo.1.1_3.1
- (no CPE)range: < 1.6.44-160000.5.1
Patches
Vulnerability mechanics
References
51- github.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88nvdPatch
- github.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3nvdExploitVendor Advisory
- www.openwall.com/lists/oss-security/2026/02/09/7nvdMailing List
- access.redhat.com/errata/RHSA-2026:10097nvd
- access.redhat.com/errata/RHSA-2026:12274nvd
- access.redhat.com/errata/RHSA-2026:14773nvd
- access.redhat.com/errata/RHSA-2026:15087nvd
- access.redhat.com/errata/RHSA-2026:16174nvd
- access.redhat.com/errata/RHSA-2026:17596nvd
- access.redhat.com/errata/RHSA-2026:3031nvd
- access.redhat.com/errata/RHSA-2026:3405nvd
- access.redhat.com/errata/RHSA-2026:3551nvd
- access.redhat.com/errata/RHSA-2026:3573nvd
- access.redhat.com/errata/RHSA-2026:3574nvd
- access.redhat.com/errata/RHSA-2026:3575nvd
- access.redhat.com/errata/RHSA-2026:3576nvd
- access.redhat.com/errata/RHSA-2026:3577nvd
- access.redhat.com/errata/RHSA-2026:3968nvd
- access.redhat.com/errata/RHSA-2026:3969nvd
- access.redhat.com/errata/RHSA-2026:4221nvd
- access.redhat.com/errata/RHSA-2026:4222nvd
- access.redhat.com/errata/RHSA-2026:4306nvd
- access.redhat.com/errata/RHSA-2026:4501nvd
- access.redhat.com/errata/RHSA-2026:4728nvd
- access.redhat.com/errata/RHSA-2026:4729nvd
- access.redhat.com/errata/RHSA-2026:4730nvd
- access.redhat.com/errata/RHSA-2026:4731nvd
- access.redhat.com/errata/RHSA-2026:4732nvd
- access.redhat.com/errata/RHSA-2026:4756nvd
- access.redhat.com/errata/RHSA-2026:5606nvd
- access.redhat.com/errata/RHSA-2026:6439nvd
- access.redhat.com/errata/RHSA-2026:6445nvd
- access.redhat.com/errata/RHSA-2026:6466nvd
- access.redhat.com/errata/RHSA-2026:6467nvd
- access.redhat.com/errata/RHSA-2026:6468nvd
- access.redhat.com/errata/RHSA-2026:6469nvd
- access.redhat.com/errata/RHSA-2026:6553nvd
- access.redhat.com/errata/RHSA-2026:6732nvd
- access.redhat.com/errata/RHSA-2026:7032nvd
- access.redhat.com/errata/RHSA-2026:7033nvd
- access.redhat.com/errata/RHSA-2026:7034nvd
- access.redhat.com/errata/RHSA-2026:7035nvd
- access.redhat.com/errata/RHSA-2026:7036nvd
- access.redhat.com/errata/RHSA-2026:7239nvd
- access.redhat.com/errata/RHSA-2026:7243nvd
- access.redhat.com/errata/RHSA-2026:8746nvd
- access.redhat.com/errata/RHSA-2026:8747nvd
- access.redhat.com/errata/RHSA-2026:8748nvd
- access.redhat.com/security/cve/CVE-2026-25646nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25646.jsonnvd
News mentions
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