CVE-2026-42140 Server-Side Request Forgery (SSRF) in PlantUML Macro via 'server' parameter

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...