Open Redirection in Login Handling
Problem
It has been discovered that Login Handling is susceptible to open redirection which allows attackers redirecting to arbitrary content, and conducting phishing attacks. No authentication is required in order to exploit this vulnerability.
Solution
Update to TYPO3 versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 that fix the problem described.
Credits
Thanks to Alexander Kellner who reported this issue and to TYPO3 security team member Torben Hansen who fixed the issue.
References
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | typo3/cms | >= 10.0.0, < 10.4.14, >= 11.0.0, < 11.1.1, >= 9.0.0, < 9.5.25 | 10.4.14, 11.1.1, 9.5.25 |
| Composer package | typo3/cms-core | >= 6.2.0, < 6.2.57, >= 7.0.0, < 7.6.51, >= 8.0.0, < 8.7.40, >= 10.0.0, < 10.4.14, >= 11.0.0, < 11.1.1, >= 9.0.0, < 9.5.25 | 6.2.57, 7.6.51, 8.7.40, 10.4.14, 11.1.1, 9.5.25 |
References
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4jhw-2p6j-5wmp
- https://nvd.nist.gov/vuln/detail/CVE-2021-21338
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21338.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21338.yaml
- https://packagist.org/packages/typo3/cms-core
- https://typo3.org/security/advisory/typo3-core-sa-2021-001
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-601- Platform
- Composer
- Package
typo3/cms, typo3/cms-core- Disclosed
- 23.03.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4jhw-2p6j-5wmp - CC BY 4.0
Vulnerability history: typo3/cms
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 188
- First → latest
- 09.2018 06.2024
- Without a fix
- 3
- Exploited in attacks
- 0
Severity breakdown
- Critical 6
- High 41
- Medium 128
- Low 13
Disclosures per year
- 2018: 2
- 2019: 0
- 2020: 13
- 2021: 15
- 2022: 85
- 2023: 1
- 2024: 72
- 2025: 0
- 2026: 0
-
Open Redirection in Login Handling this entry
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