✅ Check your installed version
All known vulnerabilities
>= 4.1.0, < 4.4.39
CRITICAL9.8CVE-2017-16558Contao SQL injection in the backend and listing module >= 3.0.0, <= 3.5.30
CRITICAL9.8CVE-2019-10641Contao Does Not Invalidate Existing Sessions When Password Changes >= 4.0.0, < 4.4.37
>= 4.7.0, < 4.7.3
>= 4.9.0, < 4.9.40
>= 4.7.0, < 4.7.3
>= 4.0.0, < 4.4.1
>= 4.0.0, < 4.4.46
>= 4.0.0, < 4.4.56
>= 4.13.0, < 4.13.3
>= 4.0.0, < 4.4.56
MEDIUM6.5CVE-2018-20028Contao Information Disclosure via Access Control Flaws >= 3.0.0, < 3.5.37
>= 4.0.0, < 4.4.18
>= 4.5.0, < 4.9.16
MEDIUM5.9CVE-2021-35955Cross site scripting via HTML attributes in the back end >= 4.0.0, < 4.4.56
MEDIUM5.3CVE-2025-57757Contao can disclose sensitive information in the news module >= 5.0.0-RC1, < 5.3.38
MEDIUM5.3CVE-2025-57756Contao discloses sensitive information in the front end search index >= 4.9.14, < 4.13.56
>= 4.0.0, < 4.4.52
MEDIUM5.3CVE-2019-19714Insert tag injection in the Contao login module >= 4.8.4, < 4.8.6
>= 4.0.0, < 4.4.46
MEDIUM4.3CVE-2025-57759Contao does not properly manage privileges for page and article fields >= 5.3.0, < 5.3.38
MEDIUM4.3CVE-2025-57758Contao applies improper access control in the back end voters >= 5.0.0, < 5.3.38