High 7.5Published Oct 16, 2026

CVE-2026-57486pupnp: NULL pointer dereference in ixmlNode_compare crashes on non-namespaced attributes

Updated under an hour ago (Oct 26, 2026, 5:50 AM ET)

Does this affect you?

It affects pupnp and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.41%, higher than 35% of scored CVEs.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for pupnp

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.41% (percentile 35)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 16, 2026

Affected products

Affected products

pupnp pupnp pupnp:pupnp (from the name)	before 2.0.2	CNA record
pupnp_project pupnp pupnp_project:pupnp	before 2.0.2	NVD

References

https://github.com/pupnp/pupnp/security/advisories/GHSA-q54q-vx78-v9rqx-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/pupnp/pupnp/commit/4b2f775e3b98de3cfb096707bcde040c5562d9ecx-refsource-misc, patch
https://github.com/pupnp/pupnp/releases/tag/release-2.0.2x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.