CVE-2025-12107 WSO2 CVE debrief

Who should care

WSO2 Identity Server administrators and users, as well as organizations relying on this product for identity management, should be aware of this vulnerability. They should prioritize patching and take steps to prevent potential remote code execution and unauthorized access. This includes reviewing compensating controls and monitoring for suspicious activity related to template injection. Security teams and vulnerability management teams should also be aware of this vulnerability and its potential impact on their organization's security posture. Additionally, operators and platform administrators should review the affected product scope and take necessary actions to mitigate the vulnerability. Security teams should also review the CVE and NVD records for further information and guidance on mitigating this vulnerability. This vulnerability may impact organizations that use WSO2 Identity Server for identity management and may require additional security measures to prevent exploitation. The vulnerability can be mitigated by applying patches or updates provided by WSO2, restricting access to the Velocity template engine, and monitoring for suspicious activity related to template injection. Security teams should also consider implementing compensating controls, such as additional monitoring or logging, to detect and respond to potential exploitation attempts. Furthermore, asset inventory and vulnerability management teams should review their systems and prioritize patching to prevent potential exploitation. Overall, a coordinated effort is required to mitigate this vulnerability and prevent potential security breaches. This may involve collaboration between security teams, IT teams, and other stakeholders to ensure that all necessary steps are taken to protect against exploitation. By prioritizing patching and taking proactive steps to mitigate this vulnerability, organizations can reduce the risk of security breaches and protect their sensitive information. The vulnerability can be addressed by following the recommended actions provided by the CVE Program and NVD, which include applying patches or updates, restricting access to the Velocity template engine, and and

Technical summary

The Velocity template engine in WSO2 Identity Server is vulnerable to arbitrary template syntax injection due to insufficient sanitization or validation of user-controlled input. An authenticated administrator can exploit this to execute arbitrary template code on the server, potentially leading to remote code execution, data manipulation, and unauthorized access to sensitive information. This vulnerability affects WSO2 Identity Server, which is used for identity management.

Defensive priority

Organizations using WSO2 Identity Server should prioritize patching this vulnerability to prevent potential remote code execution and unauthorized access.

Recommended defensive actions

• Apply patches or updates provided by WSO2 to address the vulnerability
• Restrict access to the Velocity template engine to only necessary users
• Monitor for suspicious activity related to template injection
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE description indicates that the Velocity template engine in WSO2 Identity Server accepts and processes template syntax without sufficient sanitization or validation of user-controlled input, allowing an authenticated administrator to inject arbitrary template syntax. Evidence is limited to CVE and NVD data. Defenders should verify WSO2 Identity Server deployments, review template engine usage, and monitor for suspicious activity related to template injection.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.