GHSA-8c25-vj2w-p72j
TYPO3 Cross-Site Scripting in Frontend User Login
Failing to properly encode user input, login status display is vulnerable to cross-site scripting in the website frontend. A valid user account is needed in order to exploit this vulnerability - either a backend user or a frontend user having the possibility to modify their user profile.
Template patterns that are affected are
- ###FEUSER_[fieldName]### using system extension felogin
<!--###USERNAME###--> for regular frontend rendering (pattern can be defined individually using TypoScript setting config.USERNAME_substToken)
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
What each source reports
GitHub Advisories Score used
TYPO3 Cross-Site Scripting in Frontend User Login
Failing to properly encode user input, login status display is vulnerable to cross-site scripting in the website frontend. A valid user account is needed in order to exploit this vulnerability - either a backend user or a frontend user having the possibility to modify their user profile.
Template patterns that are affected are
- ###FEUSER_[fieldName]### using system extension felogin
<!--###USERNAME###--> for regular frontend rendering (pattern can be defined individually using TypoScript setting config.USERNAME_substToken)
- Record
GHSA-8c25-vj2w-p72j- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
TYPO3 Cross-Site Scripting in Frontend User Login
Failing to properly encode user input, login status display is vulnerable to cross-site scripting in the website frontend. A valid user account is needed in order to exploit this vulnerability - either a backend user or a frontend user having the possibility to modify their user profile.
Template patterns that are affected are
- ###FEUSER_[fieldName]### using system extension felogin
<!--###USERNAME###--> for regular frontend rendering (pattern can be defined individually using TypoScript setting config.USERNAME_substToken)
- Record
GHSA-8c25-vj2w-p72j- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
typo3/cms-corePackagist | 8.0.0 up to 8.7.21 | 8.7.21 |
typo3/cms-corePackagist | 9.0.0 up to 9.5.2 | 9.5.2 |
typo3/cms-corePackagist | 7.1.0 up to 7.6.32 | 7.6.32 |
typo3/cms-corePackagist | 8.0.0 up to 8.7.21, plus listed versions v8.7.10v8.7.11v8.7.12v8.7.13v8.7.14 Show 9 moreShow lessv8.7.15v8.7.16v8.7.17v8.7.18v8.7.19v8.7.20v8.7.7v8.7.8v8.7.9 | 8.7.21 |
typo3/cms-corePackagist | 9.0.0 up to 9.5.2, plus listed versions v9.0.0v9.1.0v9.2.0v9.2.1v9.3.0 Show 6 moreShow lessv9.3.1v9.3.2v9.3.3v9.4.0v9.5.0v9.5.1 | 9.5.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-8c25-vj2w-p72j is a medium vulnerability (CVSS 6.1) in typo3/cms-core, published May 30, 2024. No source lists public exploit code. Fixed in typo3/cms-core 8.7.21.