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TI-2026-53872 Aliases CVE-2026-77129GHSA-j8g2-q9pf-89w3

Server-Side Template Injection in extension "Event management and registration" (sf_event_mgt)

Priority LOW 36CWE-1336Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1336.

Summary

The extension passes an editor-configurable email subject string directly into a Fluid template source without restriction. A backend user with edit access to the event plugin or Backend Module can supply Fluid ViewHelper syntax in this field to disclose sensitive data or execute TypoScript content objects. Exploitation of this issue requires an authenticated backend account with edit access to the event registration plugin or backend module.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Fix Fixed Extension "Event management and registration" (TYPO3): 9.0.3, 8.6.2, 7.9.3 +2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 "Event management and registration"9.0.0 to before 9.0.3; 8.0.0 to before 8.6.2; 7.0.0 to before 7.9.3; 6.0.0 to before 6.7.2; before 5.9.39.0.3, 8.6.2, 7.9.3, 6.7.2, 5.9.3Patch availableCNA
  • Extension "Event management and registration" VendorTYPO3 Affected 9.0.0 to before 9.0.3; 8.0.0 to before 8.6.2; 7.0.0 to before 7.9.3; 6.0.0 to before 6.7.2; before 5.9.3 Fixed in 9.0.3, 8.6.2, 7.9.3, 6.7.2, 5.9.3 Patch available CNA

Remediation

  • Fix · CNA Extension "Event management and registration" (TYPO3) Fixed in 9.0.3, 8.6.2, 7.9.3, 6.7.2, 5.9.3

Fixed in the same release

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

  • Advisory ·

    TYPO3 Extension "Event management and registration" — typo3.org/security/advisory/typo3-ext-sa-2026-023

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-53871 Broken Access Control in extension "Event management and registration" (sf_event_mgt)Priority LOW 29
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77129
  2. 2026-10-03 Alias added: GHSA-j8g2-q9pf-89w3

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