CVE-2026-77127 Information Disclosure in extension "Modules" (modules)
Authenticated low-privileged users can access sensitive database values, including password hashes, via an unrestricted AJAX endpoint in the TYPO3 Modules extension.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77127?
CVE-2026-77127 is a medium-severity vulnerability in TYPO3 Extension "Modules", published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The extension fails to restrict a backend AJAX endpoint for inline editing to fields the current user is permitted to see or edit. An authenticated, low-privileged backend user can supply arbitrary table, field and record parameters, and trigger an error response that discloses the current database value of the requested field, leading to disclosure of sensitive information such as backend and frontend user password hashes. Exploitation requires a valid, authenticated TYPO3 backend user account with access to the extensions backend module.
Weakness: CWE-639
Which versions are affected by CVE-2026-77127?
How do I fix CVE-2026-77127?
No fix has been published for CVE-2026-77127 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-77127 being exploited?
There is no known exploitation of CVE-2026-77127 in the wild and no public exploit code.
Sources
Also known as GHSA-75q8-x7vq-6h5p.