Uncontrolled Recursion in PUPnP - CVE-2026-55862
Published: June 18, 2026
Vulnerability identifier: #VU134840
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/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: CVE-2026-55862
CWE-ID: CWE-674
Exploitation vector: Adjecent network
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 uncontrolled recursion in ixml recursive DOM tree traversal functions when processing deeply nested XML in SOAP requests. A remote attacker can send a specially crafted SOAP request containing deeply nested XML to cause a denial of service.
The XML parser itself processes the document iteratively, but subsequent internal SOAP processing can invoke recursive DOM functions such as ixmlPrintNode().
How to mitigate CVE-2026-55862
Install security update from vendor's website.