CVE-2025-11731 Libxslt: type confusion in exsltfuncresultcompfunction of libxslt
A type confusion flaw in libxslt allows attackers to cause application crashes and denial of service via crafted XML stylesheets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-11731?
CVE-2025-11731 is a low-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 14 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT <func:result> elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service.
Weakness: CWE-843
Which versions are affected by CVE-2025-11731?
Linux distribution packages (10)
libxslt SUSE:Enterprise Storage 7.1 | All versions | 1.1.32-150000.3.28.1 |
libxslt SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 1.1.32-150000.3.28.1 |
libxslt SUSE:Linux Enterprise Micro 5.1 | All versions | 1.1.32-150000.3.28.1 |
libxslt SUSE:Linux Enterprise Micro 5.2 | All versions | 1.1.32-150000.3.28.1 |
libxslt SUSE:Linux Enterprise Server 12 SP5-LTSS | All versions | 1.1.28-17.21.1 |
libxslt SUSE:Linux Enterprise Server 15 SP3-LTSS | All versions | 1.1.32-150000.3.28.1 |
libxslt SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 1.1.28-17.21.1 |
libxslt SUSE:Linux Enterprise Server for SAP Applications 15 SP3 | All versions | 1.1.32-150000.3.28.1 |
libxslt-python openSUSE:Leap 15.6 | All versions | 1.1.32-150000.3.28.1 |
libxslt openSUSE:Tumbleweed | All versions | 1.1.43-4.1 |
How do I fix CVE-2025-11731?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-11731 being exploited?
There is no known exploitation of CVE-2025-11731 in the wild and no public exploit code.
Sources
Also known as AZL-70550, AZL-70601, BELL-CVE-2025-11731, DEBIAN-CVE-2025-11731, ECHO-c04a-8ebf-d378, GHSA-9f23-58rv-2hx4 and 9 more.