Improper Neutralization of Special Elements Used in a Template Engine Affecting org.xwiki.commons:xwiki-commons-velocity package, versions [,17.6.0-rc-1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGXWIKICOMMONS-12194802
- published26 Aug 2025
- disclosed20 Aug 2025
- creditmalcxlmj
Introduced: 20 Aug 2025
NewCVE-2025-51991 (opens in a new tab)How to fix?
Upgrade org.xwiki.commons:xwiki-commons-velocity to version 17.6.0-rc-1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine via improper handling of dynamic template rendering in the HTTP Meta Info field of the Global Preferences Presentation section. An attacker can execute arbitrary template logic on the server by injecting crafted Apache Velocity template code. This may expose internal server information or, depending on configuration, allow further exploitation such as remote code execution or sensitive data leakage.
Note:
This is only exploitable if the attacker has authenticated administrator access to the Administration interface.