YesWiki vulnerabilities

YesWiki prior to version 4.6.6 contains a stored Server-Side Template Injection (SSTI) vulnerability in the semantic template feature that can be escalated to Remote Code Execution (RCE). An authenticated administrator can place arbitrary Twig expressions into the Semantic template field, which are executed server-side when public semantic endpoints are requested.

In YesWiki prior to version 4.6.0, a stored and blind XSS vulnerability was found in the form title field. An unauthenticated attacker can inject JavaScript that executes when other users visit the page.

A Cross Site Scripting (XSS) vulnerability in YesWiki v.4.54 allows a remote attacker to execute arbitrary code via a crafted payload in the meta configuration robots field.