NULL Pointer Dereference Affecting pupnp package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-ECHOLATEST-PUPNP-21173171
  • published17 Oct 2026
  • disclosed16 Oct 2026

Introduced: 16 Oct 2026

NewCVE-2026-57486  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest pupnp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pupnp package and not the pupnp package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, ixmlNode_compare in ixml/src/node.c passes the nullable nodeValue, namespaceURI, prefix, and localName fields directly to strcmp. Non-namespaced attributes created by ixmlDocument_createAttribute legitimately leave those fields NULL. When ixmlElement_removeAttributeNode compares two distinct attribute objects with the same nodeName through find_condition_node, the pointer-identity shortcut does not apply and the comparison dereferences NULL, causing a process crash when application handling of attacker-controlled XML reaches this path. This issue is fixed in 2.0.2.