CVE-2026-4813: A vulnerability in the Lutece Core XSL export management module up to vulnerability
CVE-2026-4813 affects A vulnerability in the Lutece Core XSL export management module up to. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code.
What happened
CVE-2026-4813: A vulnerability in the Lutece Core XSL export management module up to version 7 1 7, which allows authenticated administrators to execute code remotel. A security weakness in A vulnerability in the Lutece Core XSL export management module up to is being tracked as CVE-2026-4813. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code.
The XML/XSLT processing configuration does not enable secure processing mode (FEATURE_SECURE_PROCESSING), allowing Java extension functions to be executed from malicious XSL stylesheets. An attacker with administrator privileges can upload a manipulated XSL transform.
Editorial note: this News Brief follows the available evidence and adds length only when additional facts or useful context are available. Where public reporting does not establish a specific victim sequence, CyberDeltaForce does not present one as fact.
What the reporting and advisory establish
7, which allows authenticated administrators to execute code remotely.
The XML/XSLT processing configuration does not enable secure processing mode (FEATURE_SECURE_PROCESSING), allowing Java extension functions to be executed from malicious XSL stylesheets.
An attacker with administrator privileges can upload a manipulated XSL transform
A security weakness in A vulnerability in the Lutece Core XSL export management module up to is being tracked as CVE-2026-4813. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code. The XML/XSLT processing configuration does not enable secure processing mode (FEATURE_SECURE_PROCESSING), allowing Java extension functions to be executed from malicious XSL stylesheets. An attacker with administrator privileges can upload a manipulated XSL transform. The issue currently carries a CRITICAL 9.4 severity signal in the available reporting. There is no reported exploitation in the current available reporting, so the public picture at this point is a disclosed vulnerability with known exploitation conditions rather than a confirmed compromise of every affected installation.
What this means for your environment
Move from the published facts to the technical path, exposure conditions and defensive decisions that matter in a real environment.
Attack & Exploitation Path
The sequence below shows how the vulnerability can be reached and what successful exploitation can produce. Each stage is labeled by evidence status.
Required condition: A vulnerability in the Lutece Core XSL export management module up to is present and the vulnerable function is reachable in the way the software is normally used.
Required condition: attacker-controlled input or the relevant workflow reaches the affected code path.
Not publicly disclosed in enough technical detail to describe the mechanism without inference.
successful exploitation can execute attacker-controlled code in the affected application or service. The practical reach depends on the privileges and resources available to that process.
Map A vulnerability in the Lutece Core XSL export management module up to to real assets, verify the vendor fix or mitigation, confirm the vulnerable path is no longer reachable, and review relevant telemetry for behavior consistent with exploitation.
Why this matters to you
CVE-2026-4813 matters because the practical risk is not the score alone — it is whether A vulnerability in the Lutece Core XSL export management module up to exists in your environment and whether the reported trigger or exposure path can reach it. The current severity is CRITICAL 9.4. No exploitation flag is currently present in the CDF data, but that does not remove the need to validate affected systems.
Does this deserve attention in my environment?
Check the conditions below against your use of A vulnerability in the Lutece Core XSL export management module up to.
Select the conditions that are true in your environment. Leaving a condition unselected does not mean you are safe — it only means you have not marked it as applicable.
- Search endpoint, software and asset inventory for A vulnerability in the Lutece Core XSL export management module up to.
- Confirm the vendor-recommended fixed version or mitigation and verify deployment, not just assignment, across affected assets.
- Review relevant endpoint, application, network or identity telemetry for activity associated with exploitation of the affected component.
- Track vendor and government guidance for any change in exploitation status while remediation is underway.
What remains unconfirmed
- Available reporting does not currently indicate exploitation, but that can change as vendor, government or threat-intelligence reporting develops.
Sources & References
Original reporting and technical references are kept here for readers who want to verify the facts. Publisher names stay out of the reading flow above.