https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-17T10:01:11.464653+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-308480 EUVD-2026-308480 2026-10-17T10:01:11.467227+00:00 EUVD-2026-308480 https://cve.radiocsirt.org/vuln/fkie_cve-2026-42140 fkie_cve-2026-42140 2026-10-17T10:01:11.467264+00:00

PlantUML Macro is a macro for rendering UML diagrams from simple textual schemes. Prior to version 2.4.1, the PlantUML Macro is vulnerable to Server-Side Request Forgery (SSRF). The macro allows users to specify an alternative PlantUML server via the server parameter. However, the application does not validate the supplied URL. An attacker can supply an internal IP address or a malicious external URL. The XWiki server will attempt to connect to this URL to "render" the diagram. This issue has been patched in version 2.4.1.

 https://cve.radiocsirt.org/vuln/ghsa-42fc-7w97-8vrc GHSA-42fc-7w97-8vrc — XWiki PlantUML Macro Vulnerable to Server-Side Request Forgery (SSRF) via 'server' parameter 2026-10-17T10:01:11.467308+00:00

Affected: Maven: org.xwiki.contrib.plantuml:macro-plantuml-macro

### Impact

The [PlantUML Macro](https://extensions.xwiki.org/xwiki/bin/view/Extension/PlantUML+Macro) is vulnerable to Server-Side Request Forgery (SSRF). The macro allows users to specify an alternative PlantUML server via the `server` parameter. However, the application does not validate the supplied URL. An attacker can supply an internal IP address or a malicious external URL. The XWiki server will attempt to connect to this URL to "render" the diagram.

This issue affects all versions of the Plant UML Macro extension till version 2.4 included.

### Patches

Version 2.4.1 of the Plant UML Macro extension fixes the issue by verifying if the supplied server domain matches one of the [trusted domain configured inside of XWiki](https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Configuration/#HTrusteddomains).

### Workarounds

Protect the XWiki server by placing it in a DMZ so that it cannot access any other internal servers.

### Resources

The issue was fixed in [PLANTUML-25](https://jira.xwiki.org/browse/PLANTUML-25) by the commit [c8b19bda93058794e04c8862fc7ca85c59b5fe5c](https://github.com/xwiki-contrib/macro-plantuml/commit/c8b19bda93058794e04c8862fc7ca85c59b5fe5c).

### For more information

If there are any questions or comments about this advisory: * Open an issue in [JIRA XWiki.org](https://jira.xwiki.org/) * Send an email to [Security Mailing List](mailto:security@xwiki.org)

### Attribution

The issue was reported by Łukasz Rybak.