Description
The click tracking middleware does not validate the authentication code of a recipient if the code is omitted. Unauthenticated attackers can retrieve personal data of newsletter recipients, which is inserted into links of sent mails.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| TYPO3 | Extension "Mail" | 4.0.0 – < 4.2.0, < 3.12.5 | 4.2.0 |
Advisories 1
- WID-SEC-2026-4322 TYPO3 Extension (Mail): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 3, 2026
References
- https://typo3.org/security/advisory/typo3-ext-sa-2026-037 vendor-advisory