GHSA-3CV5-Q585-H563 Gotenberg has arbitrary PDF read via stampExpression and watermarkExpression in merge, split, and convert routes

Summary Six conversion routes pdfengines/merge, pdfengines/split, libreoffice/convert, chromium/convert/url, chromium/convert/html, chromium/convert/markdown accept stampSource=pdf + stampExpression=/path and watermarkSource=pdf + watermarkExpression=/path from anonymous callers. The dedicated...