#VU105946 Use-after-free in libxslt - CVE-2025-24855

Vulnerability identifier: #VU105946

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-24855

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libxslt
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in numbers.c when handling nested XPath evaluations. A remote attacker can pass specially crafted XML input to the application, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libxslt: 0.0.0 - 1.1.42

---

External links
https://gitlab.gnome.org/GNOME/libxslt/-/issues/128

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.