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TI-2026-75349 Aliases CVE-2026-55862

Uncontrolled recursion in pupnp DOM functions causes stack overflow

Priority MEDIUM 62CWE-674Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-674.

Summary

pupnp versions before 2.0.0 are affected. The ixml DOM traversal functions recurse without bounds over deeply nested XML, which is tied to CWE-674. An unauthenticated peer on the local network can send deeply nested XML in a SOAP request, exhausting the service thread's stack and crashing the UPnP service. This is an incomplete fix for CVE-2021-28302, and a public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00465 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed pupnp (pupnp): 2.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pupnppupnpbefore 2.0.02.0.0Patch availableCNA
  • pupnp Vendorpupnp Affected before 2.0.0 Fixed in 2.0.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pupnp_project:pupnp:*:*:*:*:*:*:*:*before 2.0.0Vulnerablepupnp
  • cpe:2.3:a:pupnp_project:pupnp:*:*:*:*:*:*:*:* Versions before 2.0.0 Vulnerable ·pupnp

Remediation

Upgrade pupnp to version 2.0.0, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA pupnp (pupnp) Fixed in 2.0.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-55862
  2. 2026-10-18 CISA SSVC decision points changed
  3. 2026-10-21 Affected versions changed · Red Hat
  4. 2026-10-21 CVSS score added · Red Hat

References

Exploit 1

Patch 1

Other 1

  • TI-2026-75352 pupnp: NULL pointer dereference in ixmlNode_compare, non-namespaced attributes CVSS 3.1HIGH 7.5
  • TI-2026-75354 pupnp Content-Length integer truncation enables request smuggling CVSS 3.1HIGH 7.1
  • TI-2021-10175 DNS rebinding in pupnp CVSS 3.1CRITICAL 9.8
  • TI-2026-75358 Blocking DNS lookups in pupnp allow denial of service CVSS 3.1HIGH 7.5
  • TI-2026-75353 Chunked HTTP bodies in libupnp bypass the size limit CVSS 3.1HIGH 7.5
  • TI-2021-09467 A stack overflow in pupnp before version 1.14.5 can cause the denial of service through… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences