The routes (aka Extbase Yaml Routes) extension before 2.1.1 for TYPO3, when CsrfTokenViewHelper is used, allows Sensitive Information Disclosure because a session identifier is unsafely present in HTML output.
CVSS 3.1HIGH 7.5·Network·No auth·No interaction·EPSS 0.01013·Published 2021-08-13·Fixed in 2.1.1CWE-200