Low [CVE-2025-11731] Libxslt: type confusion in exsltfuncresultcompfunction of libxslt
This low-severity Red Hat Linux advisory covers CVE-2025-11731 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6.
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Summary
A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT 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.
The Red Hat Product Security team has rated this vulnerability as Low severity, given that exploitation only causes a crash and requires the processing of a specially crafted XSL stylesheet. There is no evidence of data corruption or code execution, but affected applications may experience denial-of-service conditions.
Weakness: CWE-843. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4.
Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:11015.
Affected products named by the advisory: Red Hat package: libxslt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- libxslt-main-1.1.45-0.1.hum1
- RHSA-2026:11015
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options don’t meet the Red Hat Product Security criteria comprising ease of use, applicability to a widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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