CVE-2021-29462

9.8 criticalEPSS 0.6%

Critical (9.8) in pupnp project pupnp. EPSS 0.6% chance of exploitation in the next 30 days.

The Portable SDK for UPnP Devices is an SDK for development of UPnP device and control point applications. The server part of pupnp (libupnp) appears to be vulnerable to DNS rebinding attacks because it does not check the value of the `Host` header. This can be mitigated by using DNS revolvers which block DNS-rebinding attacks. The vulnerability is fixed in version 1.14.6 and later.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWEs: CWE-345, CWE-20
Published: 2021-04-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

pupnp_project:pupnp

References

http://www.openwall.com/lists/oss-security/2021/04/20/4
https://github.com/pupnp/pupnp/security/advisories/GHSA-6hqq-w3jq-9fhg
http://www.openwall.com/lists/oss-security/2021/04/20/4
https://github.com/pupnp/pupnp/security/advisories/GHSA-6hqq-w3jq-9fhg

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