{"schema":"threatline.record/2","record":{"id":"CVE-2026-77630","aliases":["GHSA-46ph-jff5-5h77"],"summary":"pupnp: Denial of service via blocking DNS resolution in parse_uri()/GENA callback parsing","details":"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.","categories":["Unclassified"],"product":"pupnp","vendor":"pupnp","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-77630","source_modified_at":"2026-10-16T17:06:16.423Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"pupnp","vendor":"pupnp","versions":[{"version":"< 22.0.4","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.0034,"percentile":0.26326,"score_date":"2026-10-23"},"published_at":"2026-10-16T15:36:05.117Z","modified_at":"2026-10-16T17:06:16.423Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-77630","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T17:06:16.423Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-77630","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/pupnp/pupnp/releases/tag/release-22.0.4","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://issues.oss-fuzz.com/issues/531780528","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-16T16:46:58.448632Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T17:06:16.423Z","content_hash":"ed15e3a6ab1e486ddf4f538064b614a39783c82e77973a7d9d5c2227085f9160"}}