{"id":"CVE-2026-77630","published":"2026-10-16T16:21:03.187","lastModified":"2026-10-16T18:18:37.020","description":"pupnp is an SDK for development of UPnP device and control point applications. Prior to 22.0.4, parse_hostport in upnp/src/genlib/net/uri/uri.c synchronously calls getaddrinfo while parse_uri is processing attacker-supplied hostnames from inbound HTTP request targets in upnp/src/genlib/net/http/httpparser.c and GENA SUBSCRIBE CALLBACK headers handled by create_url_list in upnp/src/gena/gena_device.c. A remote unauthenticated peer can choose a slow or nonresponsive hostname and block a bounded miniserver worker for the resolver timeout, allowing a small number of requests to exhaust the thread pool and deny UPnP service. This issue is fixed in 22.0.4.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2","tags":[]},{"url":"https://github.com/pupnp/pupnp/releases/tag/release-22.0.4","tags":[]},{"url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77","tags":[]},{"url":"https://issues.oss-fuzz.com/issues/531780528","tags":[]}],"exploitRefs":[{"url":"https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2","tags":[]},{"url":"https://github.com/pupnp/pupnp/releases/tag/release-22.0.4","tags":[]},{"url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77","tags":[]}],"hasPoc":true,"ai":null}