TI-2020-08939 Aliases CVE-2020-11065 GHSA-4j77-gg36-9864

Cross-Site Scripting in TYPO3 CMS

LOW 25CWE-79Published 2020-05-13 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
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

In TYPO3 CMS greater than or equal to 9.5.12 and less than 9.5.17, and greater than or equal to 10.2.0 and less than 10.4.2, it has been discovered that link tags generated by typolink functionality are vulnerable to cross-site scripting; properties being assigned as HTML attributes have not been parsed correctly. This has been fixed in 9.5.17 and 10.4.2.

Why it matters now

EPSS 0.0054 45th percentileScored 2026-11-07

Fix Fixed TYPO3 CMS (TYPO3): 9.5.17, 10.4.2typo3/cms-core (Packagist): 10.4.2, 9.5.17+1 more product

SSVC decision points

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TYPO3	TYPO3 CMS	9.5.12 to before 9.5.17; 10.2.0 to before 10.4.2	9.5.17, 10.4.2	Patch available	CNA
—	typo3/cms-core (Packagist)	10.0.0 to before 10.4.2	10.4.2	Patch available	GHSA-4j77-gg36-9864
—	typo3/cms-core (Packagist)	9.0.0 to before 9.5.17	9.5.17	Patch available	GHSA-4j77-gg36-9864
—	typo3/cms (Packagist)	10.0.0 to before 10.4.2	10.4.2	Patch available	GHSA-4j77-gg36-9864
—	typo3/cms (Packagist)	9.0.0 to before 9.5.17	9.5.17	Patch available	GHSA-4j77-gg36-9864

TYPO3 CMS VendorTYPO3 Affected 9.5.12 to before 9.5.17; 10.2.0 to before 10.4.2 Fixed in 9.5.17, 10.4.2 Patch available CNA
typo3/cms-core (Packagist) Vendor— Affected 10.0.0 to before 10.4.2 Fixed in 10.4.2 Patch available GHSA-4j77-gg36-9864
typo3/cms-core (Packagist) Vendor— Affected 9.0.0 to before 9.5.17 Fixed in 9.5.17 Patch available GHSA-4j77-gg36-9864
typo3/cms (Packagist) Vendor— Affected 10.0.0 to before 10.4.2 Fixed in 10.4.2 Patch available GHSA-4j77-gg36-9864
typo3/cms (Packagist) Vendor— Affected 9.0.0 to before 9.5.17 Fixed in 9.5.17 Patch available GHSA-4j77-gg36-9864

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:typo3:typo3::::::::	9.5.12 to before 9.5.17; 10.2.0 to before 10.4.2	Vulnerable	TYPO3

cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Versions 9.5.12 to before 9.5.17; 10.2.0 to before 10.4.2 Vulnerable ·TYPO3

Remediation

Fix · CNA TYPO3 CMS (TYPO3) Fixed in 9.5.17, 10.4.2
Fix · GHSA-4j77-gg36-9864 typo3/cms-core (Packagist) Fixed in 10.4.2 Advisory →
Fix · GHSA-4j77-gg36-9864 typo3/cms-core (Packagist) Fixed in 9.5.17 Advisory →
Fix · GHSA-4j77-gg36-9864 typo3/cms (Packagist) Fixed in 10.4.2 Advisory →
Fix · GHSA-4j77-gg36-9864 typo3/cms (Packagist) Fixed in 9.5.17 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2020-11065
2026-10-03 Alias added: GHSA-4j77-gg36-9864

References

Advisory 2

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

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