CVE-2024-34394Public exploitNetwork attack vector

Code execution via entity-node type confusion

Published May 2, 2024 · Updated Nov 25, 2024

Type confusion in libxmljs2 0.35.0 and earlier allows attackers to execute code or crash a process through crafted XML. The namespaces() method passes an entity-declaration grandchild to XmlNode::get_local_namespaces(), which treats it as an incompatible node type. Exploitation requires an application to parse attacker-controlled XML and then call namespaces() on that entity-derived grandchild; consequences include a process crash or code execution.

CVSS severity9.2
Critical
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in libxmljs2 0.35.0 and earlier allows attackers to execute code or crash a process through crafted XML. The namespaces() method passes an entity-declaration grandchild to XmlNode::get_local_namespaces(), which treats it as an incompatible node type. Exploitation requires an application to parse attacker-controlled XML and then call namespaces() on that entity-derived grandchild; consequences include a process crash or code execution.

The record

CVE
CVE-2024-34394
Published
May 2, 2024
Updated
Nov 25, 2024
Vendor
marudor
Product
libxmljs2
Classifications
CWE-843
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=*
  2. Affected versionversion=0 <=0.33.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

marudor · libxmljs2version=*; version=0 <=0.33.0

Published CVSS scores

9.2GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1JFrog Security ResearchCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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