pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.0, multiple ixml DOM traversal functions process deeply nested XML with unbounded recursion. The iterative XML parser accepts the document, but ixmlPrintDomTreeRecursive in ixml/src/ixml.c and ixmlNode_getElementsByTagNameRecursive, ixmlNode_getElementsByTagNameNSRecursive, ixmlNode_cloneNodeTreeRecursive, and ixmlNode_isAncestor in ixml/src/node.c recurse over firstChild and nextSibling links. An unauthenticated peer on the local network can supply deeply nested XML through a SOAP request, exhaust a service thread's stack, and crash the UPnP service. This is an incomplete-fix case for CVE-2021-28302 because its remediation converted ixmlNode_free but left these traversal paths recursive. This issue is fixed in 2.0.0.
History

Fri, 23 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Pupnp Project
Pupnp Project pupnp
CPEs cpe:2.3:a:pupnp_project:pupnp:*:*:*:*:*:*:*:*
Vendors & Products Pupnp Project
Pupnp Project pupnp

Fri, 23 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Pupnp
Pupnp pupnp
Vendors & Products Pupnp
Pupnp pupnp

Fri, 16 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 16 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.0, multiple ixml DOM traversal functions process deeply nested XML with unbounded recursion. The iterative XML parser accepts the document, but ixmlPrintDomTreeRecursive in ixml/src/ixml.c and ixmlNode_getElementsByTagNameRecursive, ixmlNode_getElementsByTagNameNSRecursive, ixmlNode_cloneNodeTreeRecursive, and ixmlNode_isAncestor in ixml/src/node.c recurse over firstChild and nextSibling links. An unauthenticated peer on the local network can supply deeply nested XML through a SOAP request, exhaust a service thread's stack, and crash the UPnP service. This is an incomplete-fix case for CVE-2021-28302 because its remediation converted ixmlNode_free but left these traversal paths recursive. This issue is fixed in 2.0.0.
Title pupnp: Incomplete fix for CVE-2021-28302: recursive DOM functions cause stack overflow
Weaknesses CWE-674
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-16T15:32:08.277Z

Updated: 2026-10-16T19:07:30.396Z

Reserved: 2026-06-17T16:44:40.995Z

Link: CVE-2026-55862

cve-icon Vulnrichment

Updated: 2026-10-16T19:07:06.051Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-16T16:18:44.060

Modified: 2026-10-23T16:10:19.583

Link: CVE-2026-55862

cve-icon Redhat

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