CVE-2021-29462: high-severity vulnerability in pupnp
DNS rebinding in pupnp
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.6epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
Affected products
pupnp · pupnpRelated CVEs — pupnp
In the same product, most dangerous first.
CVE-2026-55862MEDIUMpupnp: Incomplete fix for CVE-2021-28302: recursive DOM functions cause stack overflowEPSS 0.5%CVE-2026-57487HIGHlibupnp chunked HTTP bodies can bypass g_maxContentLength and be fully bufferedEPSS 0.4%CVE-2026-57486HIGHpupnp: NULL pointer dereference in ixmlNode_compare crashes on non-namespaced attributesEPSS 0.4%CVE-2026-41682MEDIUMpupnp: Port truncation via atoi() cast in parse_uri() allows SSRF port confusionEPSS 0.3%CVE-2026-77630HIGHpupnp: Denial of service via blocking DNS resolution in parse_uri()/GENA callback parsingEPSS 0.3%CVE-2026-57488HIGHpupnp: Integer truncation in HTTP Content-Length parsing enables request smugglingEPSS 0.3%