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TI-2021-12435 Aliases CVE-2021-32768GHSA-c5c9-8c6m-727v

Cross-Site Scripting via Rich-Text Content

Priority LOW 28CWE-79Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions failing to properly parse, sanitize and encode malicious rich-text content, the content rendering process in the website frontend is vulnerable to cross-site scripting. Corresponding rendering instructions via TypoScript functionality HTMLparser does not consider all potentially malicious HTML tag & attribute combinations per default. In default scenarios, a valid backend user account is needed to exploit this vulnerability. In case custom plugins used in the website frontend accept and reflect rich-text content submitted by users, no authentication is required. Update to TYPO3 versions 7.6.53 ELTS, 8.7.42 ELTS, 9.5.29, 10.4.19, 11.3.2 that fix the problem described.

Why it matters now

EPSS 0.00727 54th percentileScored 2026-11-07
Fix Fixed TYPO3.CMS (TYPO3): 7.6.53, 8.7.42, 9.5.29 +2typo3/cms-core (Packagist): 7.6.53, 8.7.42, 10.4.19 +2+1 more product

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
TYPO3TYPO3.CMS7.0.0 to before 7.6.53; 8.0.0 to before 8.7.42; 9.0.0 to before 9.5.29; 10.0.0 to before 10.4.19; 11.0.0 to before 11.3.27.6.53, 8.7.42, 9.5.29, 10.4.19, 11.3.2Patch availableCNA
—typo3/cms-core (Packagist)7.0.0 to before 7.6.537.6.53Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms-core (Packagist)8.0.0 to before 8.7.428.7.42Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms-core (Packagist)10.0.0 to before 10.4.1910.4.19Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms-core (Packagist)11.0.0 to before 11.3.211.3.2Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms-core (Packagist)9.0.0 to before 9.5.299.5.29Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms (Packagist)10.0.0 to before 10.4.1910.4.19Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms (Packagist)11.0.0 to before 11.3.211.3.2Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms (Packagist)9.0.0 to before 9.5.299.5.29Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms (Packagist)8.0.0 to before 8.7.428.7.42Patch availableGHSA-c5c9-8c6m-727v
—typo3/cms (Packagist)7.0.0 to before 7.6.537.6.53Patch availableGHSA-c5c9-8c6m-727v
  • TYPO3.CMS VendorTYPO3 Affected 7.0.0 to before 7.6.53; 8.0.0 to before 8.7.42; 9.0.0 to before 9.5.29; 10.0.0 to before 10.4.19; 11.0.0 to before 11.3.2 Fixed in 7.6.53, 8.7.42, 9.5.29, 10.4.19, 11.3.2 Patch available CNA
  • typo3/cms-core (Packagist) Vendor— Affected 7.0.0 to before 7.6.53 Fixed in 7.6.53 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms-core (Packagist) Vendor— Affected 8.0.0 to before 8.7.42 Fixed in 8.7.42 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms-core (Packagist) Vendor— Affected 10.0.0 to before 10.4.19 Fixed in 10.4.19 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms-core (Packagist) Vendor— Affected 11.0.0 to before 11.3.2 Fixed in 11.3.2 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms-core (Packagist) Vendor— Affected 9.0.0 to before 9.5.29 Fixed in 9.5.29 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms (Packagist) Vendor— Affected 10.0.0 to before 10.4.19 Fixed in 10.4.19 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms (Packagist) Vendor— Affected 11.0.0 to before 11.3.2 Fixed in 11.3.2 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms (Packagist) Vendor— Affected 9.0.0 to before 9.5.29 Fixed in 9.5.29 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms (Packagist) Vendor— Affected 8.0.0 to before 8.7.42 Fixed in 8.7.42 Patch available GHSA-c5c9-8c6m-727v
  • typo3/cms (Packagist) Vendor— Affected 7.0.0 to before 7.6.53 Fixed in 7.6.53 Patch available GHSA-c5c9-8c6m-727v

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:typo3:typo3:*:*:*:*:elts:*:*:*7.0.0 – 7.6.52; 8.0.0 – 8.7.41VulnerableTYPO3
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*9.0.0 – 9.5.28; 10.0.0 – 10.4.18; 11.0.0 – 11.3.1VulnerableTYPO3
  • cpe:2.3:a:typo3:typo3:*:*:*:*:elts:*:*:* Versions 7.0.0 – 7.6.52; 8.0.0 – 8.7.41 Vulnerable ·TYPO3
  • cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Versions 9.0.0 – 9.5.28; 10.0.0 – 10.4.18; 11.0.0 – 11.3.1 Vulnerable ·TYPO3

Remediation

  • Fix · CNA TYPO3.CMS (TYPO3) Fixed in 7.6.53, 8.7.42, 9.5.29, 10.4.19, 11.3.2
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms-core (Packagist) Fixed in 7.6.53 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms-core (Packagist) Fixed in 8.7.42 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms-core (Packagist) Fixed in 10.4.19 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms-core (Packagist) Fixed in 11.3.2 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms-core (Packagist) Fixed in 9.5.29 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms (Packagist) Fixed in 10.4.19 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms (Packagist) Fixed in 11.3.2 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms (Packagist) Fixed in 9.5.29 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms (Packagist) Fixed in 8.7.42 Advisory →
  • Fix · GHSA-c5c9-8c6m-727v typo3/cms (Packagist) Fixed in 7.6.53 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32768
  2. 2026-10-03 Alias added: GHSA-c5c9-8c6m-727v

References

Advisory 3

Other 3

  • 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