What’s Vulnerable › Vulnerabilities

CVE-2025-24855

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-03-14 · updated 2026-06-17
• Weakness: CWE-416

Description

numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal.

Affected products

• xmlsoft libxslt: before 1.1.43 — fixed in 1.1.43

How to fix

Upgrade to a fixed version: xmlsoft libxslt 1.1.43. Check the vendor advisory for mitigations.

References

• https://gitlab.gnome.org/GNOME/libxslt/-/issues/128
• https://lists.debian.org/debian-lts-announce/2025/03/msg00015.html

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