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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2 Patch
- https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 4
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-20 19:36
- StatusAwaiting Analysis → AnalyzedNVD modified 2026-10-20 19:36
- StatusReceived → Awaiting AnalysisNVD modified 2026-10-16 18:18
- First seenCVSS 7.5NVD modified 2026-10-16 16:21
Affected (CPE criteria) 1
cpe:2.3:a:pupnp_project:pupnp:*:*:*:*:*:*:*:*
References 4
- https://github.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2 Patch
- https://github.com/pupnp/pupnp/releases/tag/release-22.0.4 Release Notes
- https://github.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77 Vendor Advisory
- https://issues.oss-fuzz.com/issues/531780528 Issue Tracking