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.
Published: 2025-10-14
Score: 3.1 Low
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Monitor
AI Analysis

Impact

The vulnerability is a type confusion bug in the exsltFuncResultComp() function of libxslt, which processes EXSLT <func:result> elements during stylesheet parsing. It arises from improper type handling, causing an XML document node to be treated as a regular element node, leading to unintended memory reads. This flaw corresponds to CWE-843 (Incorrect Type Checking for a Pointer). The result may cause application instability or a denial of service but does not expose data or provide privileged access.

Affected Systems

Red Hat Enterprise Linux 6, 7, 8, 9, 10, Red Hat Hardened Images, and Red Hat OpenShift Container Platform 4 are affected. No specific patch version details are provided; the defect exists in the default libxslt package shipped with these platforms.

Risk and Exploitability

The CVSS score of 3.1 and an EPSS below 1% indicate a low severity and low probability of exploitation; the vulnerability is not listed in the CISA KEV catalog. Based on the description, it is inferred that an attacker would need to supply a malicious XSLT stylesheet containing EXSLT <func:result> elements processed by libxslt within a running application, which is not trivial. If successfully triggered, the impact would be a denial of service through a crash, but the overall risk remains low due to the difficulty of crafting the necessary input and the limited scope of the vulnerability.

Generated by OpenCVE AI on April 20, 2026 at 19:15 UTC.

Remediation

Vendor Workaround

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.


OpenCVE Recommended Actions

  • Apply the latest Red Hat update that includes a fixed libxslt package when it becomes available
  • If a patch is not yet released, configure applications to reject or sanitize EXSLT <func:result> elements, or disable EXSLT processing for untrusted XSLT input
  • No official CNA workaround is available; consider temporary measures such as disabling EXSLT processing where possible, noting limited applicability
  • Continuously monitor application logs for unexpected crashes and implement additional hardening such as restricting stylesheet execution privileges

Generated by OpenCVE AI on April 20, 2026 at 19:15 UTC.

Tracking

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Advisories

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History

Mon, 13 Apr 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hummingbird
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat hummingbird
References

Wed, 15 Oct 2025 17:30:00 +0000

Type Values Removed Values Added
References

Tue, 14 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 14 Oct 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Low


Tue, 14 Oct 2025 06:15:00 +0000

Type Values Removed Values Added
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.
Title Libxslt: type confusion in exsltfuncresultcompfunction of libxslt
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-843
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L'}


Subscriptions

Redhat Enterprise Linux Hummingbird Openshift
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-13T17:26:50.733Z

Reserved: 2025-10-14T05:28:37.404Z

Link: CVE-2025-11731

cve-icon Vulnrichment

Updated: 2025-10-14T15:18:39.195Z

cve-icon NVD

Status : Deferred

Published: 2025-10-14T06:15:34.483

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-11731

cve-icon Redhat

Severity : Low

Publid Date: 2025-10-14T00:00:00Z

Links: CVE-2025-11731 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-20T19:15:15Z

Weaknesses