libxmljs has segmentation fault, potentially leading to a denial-of-service (DoS)

published 2025-12-26 10 mo ago modified 2026-10-13 27 d ago also GHSA-jv72-59wq-8rxm , EUVD-2025-205443

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits: 0; none known

A vulnerability exists in the libxmljs 1.0.11 when parsing a specially crafted XML document. Accessing the internal _ref property on entity_ref and entity_decl nodes causes a segmentation fault, potentially leading to a denial-of-service (DoS).

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 10 mo ago (2025-12-26)

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/libxmljs/libxmljs/issues/667 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	libxmljs	<=1.0.11	no fix listed

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

github.com /libxmljs/libxmljs/issues/667
web, exploit, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2025-25341
advisory
github.com /libxmljs/libxmljs
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary