NULL pointer dereference in PUPnP - #VU134843
Published: June 18, 2026
Vulnerability identifier: #VU134843
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: pupnp
Affected software:
PUPnP
PUPnP
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to null pointer dereference in ixmlNode_compare when comparing DOM nodes with NULL fields. A remote attacker can trigger comparison of crafted attribute objects to cause a denial of service.
The issue is reachable through removeAttributeNode during processing of attacker-controlled XML.
Remediation
Install security update from vendor's website.