CVE-2025-12107: Potential authenticated Server-Side Template Injection (SSTI) vulnerability.

Published Feb 19, 2026
·
Updated

Due to the use of a vulnerable third-party Velocity template engine, a malicious actor with admin privilege may inject and execute arbitrary template syntax within server-side templates.

Successful exploitation of this vulnerability could allow a malicious actor with admin privilege to inject and execute arbitrary template code on the server, potentially leading to remote code execution, data manipulation, or unauthorized access to sensitive information.

Affected Software

1 affected component
WSO2 Identity Server=5.11.0

Remediation

Information

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4517/#solution https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4517/#solution

Event History

Feb 19, 2026
CVE Published
via MITRE·10:04 AM
Data Sourced
via MITRE·10:04 AM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-12107?

CVE-2025-12107 is considered a critical vulnerability due to its potential for unauthenticated remote code execution.

2

How do I fix CVE-2025-12107?

To fix CVE-2025-12107, upgrade to WSO2 Identity Server version 5.11.1 or later where this vulnerability has been addressed.

3

What are the consequences of exploiting CVE-2025-12107?

Exploiting CVE-2025-12107 may allow an authenticated attacker to execute arbitrary code on the server by manipulating server-side templates.

4

Who is affected by CVE-2025-12107?

CVE-2025-12107 affects users of WSO2 Identity Server version 5.11.0 that use the vulnerable Velocity template engine.

5

What is Server-Side Template Injection in the context of CVE-2025-12107?

In the context of CVE-2025-12107, Server-Side Template Injection occurs when an attacker is able to inject and execute malicious template code on the server.

Contact

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