What is CVE-2026-77630?

CVE-2026-77630 is a high-severity vulnerability in Pupnp, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-10-16.

How severe is CVE-2026-77630?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Pupnp

CVE-2026-77630

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.

Vulnerability class: DoS (Denial of Service)

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Pupnp — versions < 22.0.4

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

Frequently asked questions

What is CVE-2026-77630?: CVE-2026-77630 is a high-severity vulnerability in Pupnp, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-10-16.
How severe is CVE-2026-77630?: High severity. CVSS v3 base score is 7.5 out of 10.