CVE-2026-120328 PUBLISHED

Information Disclosure in extension "Mail" (mail)

Assigner: TYPO3
Reserved: 01.11.2026 Published: 03.11.2026 Updated: 03.11.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	TYPO3
Product	Extension "Mail"
Versions	Default: unaffected affected from 4.0.0 to 4.2.0 (excl.) affected from 0 to 3.12.5 (excl.)

Credits

Alexander Grein reporter
Alexander Grein remediation developer

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-037

Problem Types

CWE-639 Authorization Bypass Through User-Controlled Key CWE