TI-2026-76781 Aliases CVE-2026-113442 GHSA-xg65-f2rx-vwr7

Cross-site scripting in TYPO3 Fluid-Form extension (fluid_form)

LOW 24CWE-79Published 2026-10-20 · Updated 2026-10-20

Key facts

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

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

Summary

The TYPO3 Fluid-Form extension by coding.ms (fluid_form) does not escape values that visitors enter before placing them into the HTML summary email. An unauthenticated remote attacker can inject HTML into an email that is shown to the recipient, which is cross-site scripting (CWE-79). The attacker needs a user to view the email, and the CVSS 4.0 vector rates the impact as low integrity.

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

Description from the CNA

Values entered by visitors were placed into the HTML summary email without being escaped. An unauthenticated attacker could use this to inject HTML into an email that is shown to the recipient.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0046 40th 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 extension to version 6.0.6 for affected versions from 6.0.0 before 6.0.6, and to version 5.0.10 for affected 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-2026-76779 Access control flaw in TYPO3 Fluid-Form exposes visitor uploadsPriority LOW 28
Show all 2 records → Advisory →

Timeline

2026-10-20 Threatist record created from CVE-2026-113442
2026-10-20 Alias added: GHSA-xg65-f2rx-vwr7
2026-10-20 CISA SSVC decision points changed

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