{"id":"CVE-2026-77630","state":"PUBLISHED","title":"pupnp: Denial of service via blocking DNS resolution in parse_uri()/GENA callback parsing","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.","publishedAt":"2026-10-16T15:36:05.117Z","updatedAt":"2026-10-16T17:06:16.423Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["pupnp pupnp"],"affected":[{"vendor":"pupnp","product":"pupnp","versions":[{"version":"< 22.0.4","status":"affected"}]}],"references":["https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77","https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2","https://github.com/pupnp/pupnp/releases/tag/release-22.0.4","https://issues.oss-fuzz.com/issues/531780528"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/77xxx/CVE-2026-77630.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-77630","state":"PUBLISHED","datePublished":"2026-10-16T15:36:05.117Z","dateUpdated":"2026-10-16T17:06:16.423Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-20T20:52:01.927Z"},"containers":{"cna":{"title":"pupnp: Denial of service via blocking DNS resolution in parse_uri()/GENA callback parsing","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"pupnp","product":"pupnp","versions":[{"version":"< 22.0.4","status":"affected"}]}],"references":[{"url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77","name":"https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2","name":"https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2","tags":["x_refsource_MISC"]},{"url":"https://github.com/pupnp/pupnp/releases/tag/release-22.0.4","name":"https://github.com/pupnp/pupnp/releases/tag/release-22.0.4","tags":["x_refsource_MISC"]},{"url":"https://issues.oss-fuzz.com/issues/531780528","name":"https://issues.oss-fuzz.com/issues/531780528","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-16T15:36:05.117Z"},"source":{"advisory":"GHSA-46ph-jff5-5h77","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T16:46:58.448632Z","id":"CVE-2026-77630","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T17:06:16.423Z"}}]}}}