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TI-2026-84202 Aliases CVE-2026-120332GHSA-28j5-vvxh-8mj8

Cross-site scripting in TYPO3 Mail extension backend

Priority LOW 23CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The TYPO3 extension "Mail" is affected from 4.0.0 before 4.2.0 and before 3.12.5. The HTML content of mails and tracked URLs is rendered without escaping in the backend module, which is CWE-79. A backend user with access to the mail module can inject HTML and JavaScript that runs in the browser of other backend users who view a mail preview or report.

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

Description from the CNA

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.

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 the TYPO3 extension "Mail" to version 4.2.0 for the 4.x line or to version 3.12.5 for the 3.x line.

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-2026-120332
  2. 2026-11-03 Alias added: GHSA-28j5-vvxh-8mj8
  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