What’s Vulnerable › Vulnerabilities

CVE-2024-34356: TYPO3 vulnerable to Cross-Site Scripting in the Form Manager Module

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-14 · updated 2026-06-17
• Weakness: CWE-79

Description

TYPO3 is an enterprise content management system. Starting in version 9.0.0 and prior to versions 9.5.48 ELTS, 10.4.45 ELTS, 11.5.37 LTS, 12.4.15 LTS, and 13.1.1, the form manager backend module is vulnerable to cross-site scripting. Exploiting this vulnerability requires a valid backend user account with access to the form module. TYPO3 versions 9.5.48 ELTS, 10.4.45 ELTS, 11.5.37 LTS, 12.4.15 LTS, and 13.1.1 fix the problem described.

Affected products

• typo3: from 9.0.0 before 9.5.48; from 10.0.0 before 10.4.45; from 11.0.0 before 11.5.37; from 12.0.0 before 12.4.15; from 13.0.0 before 13.1.1 — fixed in 10.4.45, 11.5.37, 12.4.15, 13.1.1, 9.5.48

How to fix

Upgrade to a fixed version: typo3 10.4.45, 11.5.37, 12.4.15, 13.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/TYPO3/typo3/commit/2832e2f51f929aeddb5de7d667538a33ceda8156
• https://github.com/TYPO3/typo3/commit/d0393a879a32fb4e3569acad6bdb5cda776be1e5
• https://github.com/TYPO3/typo3/commit/e95a1224719efafb9cab2d85964f240fd0356e64
• https://github.com/TYPO3/typo3/security/advisories/GHSA-v6mw-h7w6-59w3
• https://typo3.org/security/advisory/typo3-core-sa-2024-008
• https://github.com/TYPO3/typo3/commit/2832e2f51f929aeddb5de7d667538a33ceda8156
• https://github.com/TYPO3/typo3/commit/d0393a879a32fb4e3569acad6bdb5cda776be1e5
• https://github.com/TYPO3/typo3/commit/e95a1224719efafb9cab2d85964f240fd0356e64
• https://github.com/TYPO3/typo3/security/advisories/GHSA-v6mw-h7w6-59w3
• https://typo3.org/security/advisory/typo3-core-sa-2024-008

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