{"id":"DEBIAN-CVE-2026-5720","details":"miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.","modified":"2026-09-14T17:03:21.228447197Z","published":"2026-04-17T22:16:33.803Z","upstream":["CVE-2026-5720"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-5720"}],"affected":[{"package":{"name":"miniupnpd","ecosystem":"Debian:12","purl":"pkg:deb/debian/miniupnpd?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1-1","2.3.10-1","2.3.3-1","2.3.4-1","2.3.7-1","2.3.7-2","2.3.9-1","2.3.9-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5720.json"}},{"package":{"name":"miniupnpd","ecosystem":"Debian:13","purl":"pkg:deb/debian/miniupnpd?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.9-2+deb13u1"}]}],"versions":["2.3.9-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5720.json"}},{"package":{"name":"miniupnpd","ecosystem":"Debian:14","purl":"pkg:deb/debian/miniupnpd?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.10-1"}]}],"versions":["2.3.9-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5720.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}