TI-2026-76779 Aliases CVE-2026-112240 GHSA-c6q3-3p3f-392w

Access control flaw in TYPO3 Fluid-Form exposes visitor uploads

LOW 28CWE-338Published 2026-10-20 · Updated 2026-10-20

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

The TYPO3 Fluid-Form extension (fluid_form) by coding.ms predicts the download token for files uploaded through a form and does not verify the file name in a way that resists guessing (CWE-338). The token is also shown in plain text in the text version of the notification email. An unauthenticated remote attacker can access files uploaded by other visitors.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The download link for files uploaded through a form relied on a token that could be predicted. The file name in the request was also not verified in a way that resisted guessing. An unauthenticated attacker could use this to access files uploaded by other visitors. In addition, the token was shown in plain text in the text version of the notification email.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00387 33rd percentileScored 2026-11-07

Fix Fixed Extension "TYPO3 Fluid-Form by coding.ms" (TYPO3): 6.0.6, 5.0.10

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

Vendor	Product	Affected versions	Fixed in	Status	Source
TYPO3	Extension "TYPO3 Fluid-Form by coding.ms"	6.0.0 to before 6.0.6; before 5.0.10	6.0.6, 5.0.10	Patch available	CNA

Extension "TYPO3 Fluid-Form by coding.ms" VendorTYPO3 Affected 6.0.0 to before 6.0.6; before 5.0.10 Fixed in 6.0.6, 5.0.10 Patch available CNA

Remediation

Update the TYPO3 Fluid-Form extension (fluid_form) to version 6.0.6 for affected versions from 6.0.0, or to version 5.0.10 for versions before 5.0.10.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA Extension "TYPO3 Fluid-Form by coding.ms" (TYPO3) Fixed in 6.0.6, 5.0.10

Fixed in the same release

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

Advisory · 2026-10-20
TYPO3 Extension "TYPO3 Fluid-Form by coding.ms" — typo3.org/security/advisory/typo3-ext-sa-2026-033
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-76781 Cross-site scripting in TYPO3 Fluid-Form extension (fluid_form)Priority LOW 24
Show all 2 records → Advisory →

Timeline

2026-10-20 Threatist record created from CVE-2026-112240
2026-10-20 Alias added: GHSA-c6q3-3p3f-392w
2026-10-20 CISA SSVC decision points changed
2026-10-20 Priority changed: MEDIUM → LOW

References

Advisory 1

https://typo3.org/security/advisory/typo3-ext-sa-2026-033

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