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TI-2026-84198 Aliases CVE-2026-120328GHSA-8cvh-5xpf-xwvx

Information disclosure in TYPO3 extension Mail exposes recipient data

Priority LOW 37CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

TYPO3 extension Mail is affected from 4.0.0 before 4.2.0 and from 0 before 3.12.5. The click tracking middleware does not validate the authentication code of a recipient when the code is omitted (CWE-639). An unauthenticated remote attacker can retrieve personal data of newsletter recipients, which is inserted into links of sent mails.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00403 34th percentileScored 2026-11-07
Fix Fixed Extension "Mail" (TYPO3): 4.2.0, 3.12.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TYPO3Extension "Mail"4.0.0 to before 4.2.0; before 3.12.54.2.0, 3.12.5Patch availableCNA
  • Extension "Mail" VendorTYPO3 Affected 4.0.0 to before 4.2.0; before 3.12.5 Fixed in 4.2.0, 3.12.5 Patch available CNA

Remediation

Update TYPO3 extension Mail to version 4.2.0 for the 4.x line or to version 3.12.5 for the earlier line. CISA does not list this vulnerability in its Known Exploited Vulnerabilities catalog.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA Extension "Mail" (TYPO3) Fixed in 4.2.0, 3.12.5

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    TYPO3 Extension "Mail" — typo3.org/security/advisory/typo3-ext-sa-2026-037

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-84200 TYPO3 Mail: backend users reach mails outside web mountsPriority LOW 31
    • TI-2026-84197 Open redirection in TYPO3 extension MailPriority LOW 30
    • TI-2026-84201 Server-Side Request Forgery in TYPO3 extension MailPriority LOW 24
    Show all 6 records → Advisory →

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-120328
  2. 2026-11-03 Alias added: GHSA-8cvh-5xpf-xwvx
  3. 2026-11-03 CISA SSVC decision points changed
  4. 2026-11-03 Priority changed: MEDIUM → LOW

References

Advisory 1

  • TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
  • TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
  • TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
  • TI-2025-30547 The sr_feuser_register extension through 12.4.8 for TYPO3 allows Remote Code Execution. CVSS 3.1CRITICAL 10.0
  • TI-2019-08867 The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before… CVSS 3.1CRITICAL 9.8
  • TI-2008-04019 Unspecified vulnerability in the TYPO3 Secure Directory (kw_secdir) extension before… CVSS 2.0HIGH 10.0
See all 411 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences