CVE-2024-34392: libxmljs namespaces type confusion RCE

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-05-02 · updated 2026-06-17
Weakness: CWE-843

Description

libxmljs is vulnerable to a type confusion vulnerability when parsing a specially crafted XML while invoking the namespaces() function (which invokes _wrap__xmlNode_nsDef_get()) on a grand-child of a node that refers to an entity. This vulnerability can lead to denial of service and remote code execution.

Affected products

libxmljs: before 1.0.11 — fixed in 1.0.11

How to fix

Upgrade to a fixed version: libxmljs 1.0.11. Check the vendor advisory for mitigations.

References

https://github.com/libxmljs/libxmljs/issues/646
https://research.jfrog.com/vulnerabilities/libxmljs-namespaces-type-confusion-rce-jfsa-2024-001034096/
https://github.com/libxmljs/libxmljs/issues/646
https://research.jfrog.com/vulnerabilities/libxmljs-namespaces-type-confusion-rce-jfsa-2024-001034096/

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