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.Referenceshttps://typo3.org/help/security-advisories/securityhttps://typo3.org/security/advisory/typo3-ext-sa-2021-008
