CVE-2026-6553 TYPO3 CMS Stores Cleartext Password in User Settings Module
TYPO3 CMS stores cleartext passwords in the database when changed via user settings, exposing sensitive credentials to attackers with database access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-6553?
CVE-2026-6553 is a high-severity vulnerability in Typo3 Typo3, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Changing backend users' passwords via the user settings module results in storing the cleartext password in the uc and user_settings fields of the be_users database table. This issue affects TYPO3 CMS version 14.2.0.
Weakness: CWE-312
Which versions are affected by CVE-2026-6553?
2 open source packages ship an affected version, including typo3/cms-backend. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms-backend Packagist | From 14.2.0 | 14.3.0 |
typo3/cms-backend Packagist | From 14.2.0 | 14.3.0 |
Products include Typo3 Typo3.
How do I fix CVE-2026-6553?
Upgrade typo3/cms-backend to 14.3.0 or later.
Is CVE-2026-6553 being exploited?
There is no known exploitation of CVE-2026-6553 in the wild and no public exploit code.
Other vulnerabilities in Typo3 Typo3
- CVE-2009-0258 Indexed Search Engine for TYPO3 Command Execution via Metacharacter Injection
- CVE-2011-3583 Typo3 SQL injection due to faulty prepared statements
- CVE-2011-4628 Typo3 Authentication Bypass
- CVE-2023-24814 Persisted Cross-Site Scripting in Frontend Rendering in typo3
- CVE-2021-41113 Cross-Site-Request-Forgery in Backend URI Handling in Typo3
Sources
Also known as GHSA-xvv6-p4wf-mvx7.