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TI-2026-84201 Aliases CVE-2026-120331GHSA-fr59-cpw2-mg8r

Server-Side Request Forgery in TYPO3 extension Mail

Priority LOW 24CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

TYPO3 extension Mail is affected from 4.0.0 before 4.2.0 and from 0 before 3.12.5. The server fetches the content of external URLs, stylesheets and images used in mails without validating the target host, which is Server-Side Request Forgery (CWE-918). A backend user with access to the mail module, who needs low privileges, can make the server send requests to hosts in the internal network.

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

Description from the CNA

Content of external URL mails, their stylesheets and images to embed is fetched by the server without validating the target host. Backend users with access to the mail module can make the server send requests to hosts in the internal network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00269 19th 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 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-2026-120331
  2. 2026-11-03 Alias added: GHSA-fr59-cpw2-mg8r
  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