# CVE-2025-11731: GNOME libxslt type confusion in exsltFuncResultComp

Source: https://junglewise.ai/threats/cve-2025-11731-gnome-libxslt-type-confusion-in-exsltfuncresultcomp  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-14. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

CVE-2025-11731 · Severity: low · CVSS 3.1 · Published 2025-10-14

A vulnerability was found in libxslt, a widely used library for processing XML documents. An attacker could provide a specially crafted stylesheet that causes applications using this library to crash or become unstable. While the risk of data theft is low, this flaw can lead to a denial of service, impacting the availability of systems that process untrusted XML content.

Technologies: [Gnome Libxslt](https://junglewise.ai/threats/technologies/libxslt), [Red Hat Enterprise Linux 10](https://junglewise.ai/threats/technologies/enterprise-linux-10), [Red Hat Enterprise Linux 7](https://junglewise.ai/threats/technologies/enterprise-linux-7), [Red Hat Enterprise Linux 8](https://junglewise.ai/threats/technologies/enterprise-linux-8), [Red Hat Enterprise Linux 9](https://junglewise.ai/threats/technologies/enterprise-linux-9), [Red Hat OpenShift Container Platform 4](https://junglewise.ai/threats/technologies/openshift-container-platform-4). Vendors: [Gnome](https://junglewise.ai/threats/vendors/gnome), [Red Hat](https://junglewise.ai/threats/vendors/red-hat).

## Quick answers

**Is CVE-2025-11731 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-11731 being exploited in the wild.

**How severe is CVE-2025-11731?** Low severity, with a CVSS score of 3.1, published 14 October 2025.

**Which products and versions are affected?** Gnome Libxslt < 1.1.44.

**Is there a fix for CVE-2025-11731?** A patch was published on 2026-04-27: Red Hat released security updates for Hardened Images. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-11731 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2025-11731?** Check whether you run Gnome Libxslt, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A type confusion vulnerability exists in the exsltFuncResultComp() function within libxslt's EXSLT extension. When the function handles a <func:result> element, it traverses the node hierarchy to find a parent <func:function> element. If no such ancestor is found, the loop incorrectly continues until it reaches the XML document node (xmlDoc). Because xmlDoc lacks a namespace (ns) property, the function misinterprets integer fields (compression and standalone) as a namespace pointer. This results in an out-of-bounds memory read and a potential segmentation fault. The vulnerability can be triggered remotely if an application processes an untrusted XSL stylesheet. A fix is available in libxslt version 1.1.44 and later.

## Affected products

- GNOME libxslt < 1.1.44
- Red Hat Red Hat Enterprise Linux 7
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat OpenShift Container Platform 4

## Timeline

- 2025-10-14: disclosed: Vulnerability reported by Google Big Sleep and tracked by Red Hat.
- 2025-10-14: advisory: Initial CVE publication.
- 2026-04-27: patched: Red Hat released security updates for Hardened Images.

## References

- [https://gitlab.gnome.org/GNOME/libxslt](https://gitlab.gnome.org/GNOME/libxslt)
- [https://catalog.redhat.com/software/containers/](https://catalog.redhat.com/software/containers/)
- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/errata/RHSA-2026:11015](https://access.redhat.com/errata/RHSA-2026:11015)
- [https://access.redhat.com/security/cve/CVE-2025-11731](https://access.redhat.com/security/cve/CVE-2025-11731)
- [https://bugzilla.redhat.com/show_bug.cgi?id=2403688](https://bugzilla.redhat.com/show_bug.cgi?id=2403688)
- [https://gitlab.gnome.org/GNOME/libxslt/-/issues/151](https://gitlab.gnome.org/GNOME/libxslt/-/issues/151)

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