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TI-2026-84199 Aliases CVE-2026-120329GHSA-8wqm-6fj9-3468

Broken access control in TYPO3 extension Mail lets backend users write TSconfig

Priority LOW 24CWE-74Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

TYPO3 extension "Mail" from 4.0.0 before 4.2.0 and from 0 before 3.12.5 does not restrict the settings submitted when saving the configuration of the mail backend module. Backend users with access to the mail module can write arbitrary page TSconfig, which is a missing input neutralization issue (CWE-74). The CVSS 4.0 vector shows low privileges are required, and no user interaction is needed.

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

Description from the CNA

Saving the configuration of the mail backend module writes submitted settings to the page TSconfig without restricting them to the configuration options of the module. Backend users with access to the mail module can write arbitrary page TSconfig.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00305 23rd 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
No
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 extension "Mail" to version 4.2.0 for the 4.x line or to version 3.12.5 for the 3.x line. The sources list no advisory identifiers for this fix.

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-2026-84198 Information disclosure in TYPO3 extension Mail exposes recipient dataPriority LOW 37
    • 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
    Show all 6 records → Advisory →

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-120329
  2. 2026-11-03 Alias added: GHSA-8wqm-6fj9-3468
  3. 2026-11-03 CISA SSVC decision points changed

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