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CVE-2026-77630

7.5 · HIGH

pupnp is an SDK for development of UPnP device and control point applications.

Published Oct 16, 2026pupnp_projectCWE-400EPSS 0.34%

Overview

CVE-2026-77630 is a high-severity vulnerability affecting pupnp_project pupnp. It was published on October 16, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from pupnp_project. Update pupnp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
pupnp_projectpupnp>= 0, < 22.0.4Affected

References

GitHubgithub.com/pupnp/pupnp/commit/5dba8070b4d64d976f8e6fc13f1f301befebe7d2GitHubgithub.com/pupnp/pupnp/releases/tag/release-22.0.4GitHubgithub.com/pupnp/pupnp/security/advisories/GHSA-46ph-jff5-5h77Refissues.oss-fuzz.com/issues/531780528

How CyberStrike helps

Frequently asked questions

What is CVE-2026-77630?

CVE-2026-77630 is a high-severity vulnerability affecting pupnp_project pupnp. It was published on October 16, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-77630?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-77630?

Check the references section for vendor advisories and patches from pupnp_project. Update pupnp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-77630?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-77630 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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