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TI-2021-04456 Aliases CVE-2021-21357GHSA-3vg7-jw9m-pc3f

Broken Access Control in Form Framework

Priority LOW 39CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-434.

Summary

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 8.7.40, 9.5.25, 10.4.14, 11.1.1 due to improper input validation, attackers can by-pass restrictions of predefined options and submit arbitrary data in the Form Designer backend module of the Form Framework. In the default configuration of the Form Framework this allows attackers to explicitly allow arbitrary mime-types for file uploads - however, default _fileDenyPattern_ successfully blocked files like _.htaccess_ or _malicious.php_. Besides that, attackers can persist those files in any writable directory of the corresponding TYPO3 installation. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 8.7.40, 9.5.25, 10.4.14, 11.1.1.

Why it matters now

EPSS 0.01606 76th percentileScored 2026-11-07
Fix Fixed typo3/cms-form (Packagist): 8.7.40, 9.5.25, 10.4.14 +1typo3/cms-core (Packagist): 10.4.14, 11.1.1, 9.5.25+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TYPO3TYPO3.CMS8.0.0 – 8.7.39; 9.0.0 – 9.5.24; 10.0.0 – 10.4.13; 11.0.0 – 11.1.0—No fix listedCNA
—typo3/cms-form (Packagist)8.0.0 to before 8.7.408.7.40Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms-form (Packagist)9.0.0 to before 9.5.259.5.25Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms-form (Packagist)10.0.0 to before 10.4.1410.4.14Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms-form (Packagist)11.0.0 to before 11.1.111.1.1Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms-core (Packagist)10.0.0 to before 10.4.1410.4.14Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms-core (Packagist)11.0.0 to before 11.1.111.1.1Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms-core (Packagist)9.0.0 to before 9.5.259.5.25Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms (Packagist)10.0.0 to before 10.4.1410.4.14Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms (Packagist)11.0.0 to before 11.1.111.1.1Patch availableGHSA-3vg7-jw9m-pc3f
—typo3/cms (Packagist)9.0.0 to before 9.5.259.5.25Patch availableGHSA-3vg7-jw9m-pc3f
  • TYPO3.CMS VendorTYPO3 Affected 8.0.0 – 8.7.39; 9.0.0 – 9.5.24; 10.0.0 – 10.4.13; 11.0.0 – 11.1.0 Fixed in — No fix listed CNA
  • typo3/cms-form (Packagist) Vendor— Affected 8.0.0 to before 8.7.40 Fixed in 8.7.40 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms-form (Packagist) Vendor— Affected 9.0.0 to before 9.5.25 Fixed in 9.5.25 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms-form (Packagist) Vendor— Affected 10.0.0 to before 10.4.14 Fixed in 10.4.14 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms-form (Packagist) Vendor— Affected 11.0.0 to before 11.1.1 Fixed in 11.1.1 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms-core (Packagist) Vendor— Affected 10.0.0 to before 10.4.14 Fixed in 10.4.14 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms-core (Packagist) Vendor— Affected 11.0.0 to before 11.1.1 Fixed in 11.1.1 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms-core (Packagist) Vendor— Affected 9.0.0 to before 9.5.25 Fixed in 9.5.25 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms (Packagist) Vendor— Affected 10.0.0 to before 10.4.14 Fixed in 10.4.14 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms (Packagist) Vendor— Affected 11.0.0 to before 11.1.1 Fixed in 11.1.1 Patch available GHSA-3vg7-jw9m-pc3f
  • typo3/cms (Packagist) Vendor— Affected 9.0.0 to before 9.5.25 Fixed in 9.5.25 Patch available GHSA-3vg7-jw9m-pc3f

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*8.0.0 to before 8.7.40; 9.0.0 to before 9.5.25; 10.0.0 to before 10.4.14; 11.0.0 to before 11.1.1VulnerableTYPO3
  • cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.7.40; 9.0.0 to before 9.5.25; 10.0.0 to before 10.4.14; 11.0.0 to before 11.1.1 Vulnerable ·TYPO3

Remediation

  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-form (Packagist) Fixed in 8.7.40 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-form (Packagist) Fixed in 9.5.25 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-form (Packagist) Fixed in 10.4.14 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-form (Packagist) Fixed in 11.1.1 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-core (Packagist) Fixed in 10.4.14 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-core (Packagist) Fixed in 11.1.1 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms-core (Packagist) Fixed in 9.5.25 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms (Packagist) Fixed in 10.4.14 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms (Packagist) Fixed in 11.1.1 Advisory →
  • Fix · GHSA-3vg7-jw9m-pc3f typo3/cms (Packagist) Fixed in 9.5.25 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21357
  2. 2026-10-03 Alias added: GHSA-3vg7-jw9m-pc3f

References

Advisory 4

Other 2

  • 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-2009-00241 The Indexed Search Engine (indexed_search) system extension in TYPO3 4.0.0 through 4.0.9… CVSS 2.0HIGH 10.0
  • TI-2020-08940 Improperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMS CVSS 3.1CRITICAL 10.0
  • TI-2011-03994 Improper authentication in TYPO3 CVSS 3.1CRITICAL 9.8
See all 217 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences