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TI-2026-71623 Aliases CVE-2026-109162

TYPO3 CMS - Security Misconfiguration in Form Framework

Priority LOW 28CWE-552Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
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-552.

Summary

TYPO3 CMS versions from 14.0.0 before 14.3.9 are affected. Forms using FileUpload or ImageUpload elements with a custom saveToFileMount store uploaded files in the default storage folder 1:/user_upload/ instead of the configured destination. Files placed there can end up in publicly accessible storage even when a restricted, non-public storage was configured, and they are served directly without the access checks applied to non-public storages. Forms that keep the default saveToFileMount value are not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

Forms using FileUpload or ImageUpload elements with a custom saveToFileMount configured stored uploaded files in the default storage folder 1:/user_upload/ instead of the configured destination. This could cause uploaded files to end up in a publicly accessible storage even though a restricted, non-public storage had been configured. Files stored this way are served directly, without the access checks applied to non-public storages. Forms that use the default value for saveToFileMount are not affected. This issue affects TYPO3 CMS versions 14.0.0-14.3.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Fix Fixed TYPO3 CMS (TYPO3): 14.3.9

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
TYPO3TYPO3 CMS14.0.0 to before 14.3.914.3.9Patch availableCNA
  • TYPO3 CMS VendorTYPO3 Affected 14.0.0 to before 14.3.9 Fixed in 14.3.9 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*——TYPO3
  • cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Versions — — ·TYPO3

Remediation

Update TYPO3 CMS to version 14.3.9 or later, which fixes the affected range from 14.0.0 before 14.3.9.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA TYPO3 CMS (TYPO3) Fixed in 14.3.9

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-109162
  2. 2026-10-14 2 new references · CNA
  3. 2026-10-14 Priority changed: MEDIUM → LOW
  4. 2026-10-16 CISA SSVC decision points changed

References

Patch 2

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