Vulnerability in TYPO3 Extension "Mail"

[ Description ]Official description

The HTML content of mails and tracked URLs are rendered unescaped in the backend module. Backend users with access to the mail module can inject arbitrary HTML and JavaScript, which is executed in the context of other backend users viewing the mail preview or report.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund3 Nov 2026WID-SEC-2026-4322

  TYPO3 Extension (Mail): Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-120331CVE-2026-120330CVE-2026-120333+4 more CVEs

[ References ]References

• typo3.org/security/advisory/typo3-ext-sa-2026-037