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CVE-2026-55862

6.5 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 3

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 4

  1. Cpes+1 CPE criteria (now 1)NVD modified 2026-10-23 16:10
  2. StatusAwaiting Analysis → AnalyzedNVD modified 2026-10-23 16:10
  3. StatusReceived → Awaiting AnalysisNVD modified 2026-10-16 20:17
  4. First seenCVSS 6.5NVD modified 2026-10-16 16:18

Affected (CPE criteria) 1

  • cpe:2.3:a:pupnp_project:pupnp:*:*:*:*:*:*:*:*

References 4