{"id":"DEBIAN-CVE-2025-11679","details":"Out-of-bounds Read in lws_upng_emit_next_line in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to read past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big height dimension.","modified":"2025-11-04T14:19:38.136703Z","published":"2025-10-20T14:15:40Z","withdrawn":"2025-11-04T14:19:38.136703Z","upstream":["CVE-2025-11679"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-11679"}],"affected":[{"package":{"name":"libwebsockets","ecosystem":"Debian:12","purl":"pkg:deb/debian/libwebsockets?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.6-3","4.1.6-3.1","4.3.2-1","4.3.2-2","4.3.2-3","4.3.2-4","4.3.3-1","4.3.3-1.1","4.3.3-1.1~exp1","4.3.5-1","4.3.5-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11679.json"}},{"package":{"name":"libwebsockets","ecosystem":"Debian:13","purl":"pkg:deb/debian/libwebsockets?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.5-1","4.3.5-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11679.json"}},{"package":{"name":"libwebsockets","ecosystem":"Debian:14","purl":"pkg:deb/debian/libwebsockets?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.5-1","4.3.5-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11679.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}