Contao 4.12
Contao 4.12
The Contao 4.12 reached end of service life on Jan 14, 2022 — Contao no longer ships security patches or fixes for it. Our third-party support keeps it safe to run: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance.
24/7 engineers own your Contao 4.12 incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- contao
- release
- 4.12
- product Label
- Contao
- release Label
- 4.12
- codename
- lts
- latest Version
- 4.12.7
- release Date
- 2021-08-19
- maintained
- source Url
- https://endoflife.date/contao
Lifecycle Dates
- End of Service Life
- Jan 14, 2022
- Last OEM Support
- Jan 14, 2022
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Contao 4.12 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for Contao 4.12?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Contao 4.12 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
Contao 4.12 Support: Frequently Asked Questions
Is the Contao 4.12 still supported?
Contao ended support for the Contao 4.12 on Jan 14, 2022 — no more patches or fixes from the vendor. Third-party support keeps it covered: our engineers manage issues, remediate vulnerabilities, and help you maintain compliance for as long as you run it.
When is the Contao 4.12 end of service life (EOSL) date?
Contao lists the end of service life for the Contao 4.12 as Jan 14, 2022.
Can I keep using the Contao 4.12 after its EOSL date?
Yes. EOSL means Contao stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the Contao 4.12 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location — request a quote and we respond within 24 hours.
Known Vulnerabilities Affecting Contao 4.12
14 published CVEs affect the Contao 4.12, including 2 rated critical or high severity. Contao no longer ships security patches for this release — our engineers provide mitigation guidance, workarounds and hardening support.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2024-45398 | HIGH | 8.3 | Sep 17, 2024 | Contao is an Open Source CMS. In affected versions a back end user with access to the file manager can upload malicious files and execute them on the server. Users are advised to update to Contao 4.13.49, 5.3.15 or 5.4.3. Users unable to update are advised to configure their web server so it does not execute PHP files and other scripts in the Contao file upload directory. |
| CVE-2024-28235 | HIGH | 8.3 | Apr 9, 2024 | Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages. |
| CVE-2025-65960 | MEDIUM | 6.6 | Nov 25, 2025 | Contao is an Open Source CMS. From version 4.0.0 to before 4.13.57, before 5.3.42, and before 5.6.5, back end users with precise control over the contents of template closures can execute arbitrary PHP functions that do not have required parameters. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves manually patching the Contao\Template::once() method. |
| CVE-2023-36806 | MEDIUM | 6.5 | Jul 25, 2023 | Contao is an open source content management system. Starting in version 4.0.0 and prior to versions 4.9.42, 4.13.28, and 5.1.10, it is possible for untrusted backend users to inject malicious code into headline fields in the back end, which will be executed both in the element preview (back end) and on the website (front end). Installations are only affected if there are untrusted back end users who have the rights to modify headline fields, or other fields using the input unit widget. Contao 4. |
| CVE-2024-45965 | MEDIUM | 6.4 | Oct 2, 2024 | Contao before 5.5.6 allows XSS via an SVG document. This affects (in contao/core-bundle in Composer) 4.x before 4.13.54, 5.0.x through 5.3.x before 5.3.30, and 5.4.x and 5.5..x before 5.5.6. |
| CVE-2024-30262 | MEDIUM | 5.9 | Apr 9, 2024 | Contao is an open source content management system. Prior to version 4.13.40, when a frontend member changes their password in the personal data or the password lost module, the corresponding remember-me tokens are not removed. If someone compromises an account and is able to get a remember-me token, changing the password would not be enough to reclaim control over the account. Version 4.13.40 contains a fix for the issue. As a workaround, disable "Allow auto login" in the login module. |
| CVE-2024-28190 | MEDIUM | 5.4 | Apr 9, 2024 | Contao is an open source content management system. Starting in version 4.0.0 and prior to version 4.13.40 and 5.3.4, users can inject malicious code in filenames when uploading files (back end and front end), which is then executed in tooltips and popups in the back end. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, remove upload fields from frontend forms and disable uploads for untrusted back end users. |
| CVE-2025-57756 | MEDIUM | 5.3 | Aug 28, 2025 | Contao is an Open Source CMS. In versions starting from 4.9.14 and prior to 4.13.56, 5.3.38, and 5.6.1, protected content elements that are rendered as fragments are indexed and become publicly available in the front end search. This issue has been patched in versions 4.13.56, 5.3.38, and 5.6.1. A workaround involves disabling the front end search. |
| CVE-2025-29790 | MEDIUM | 4.8 | Mar 18, 2025 | Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6. |
| CVE-2024-45604 | MEDIUM | 4.3 | Sep 17, 2024 | Contao is an Open Source CMS. In affected versions authenticated users in the back end can list files outside the document root in the file selector widget. Users are advised to update to Contao 4.13.49. There are no known workarounds for this vulnerability. |
| CVE-2024-28234 | MEDIUM | 4.3 | Apr 9, 2024 | Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments. |
| CVE-2023-29200 | MEDIUM | 4.3 | Apr 25, 2023 | Contao is an open source content management system. Prior to versions 4.9.40, 4.13.21, and 5.1.4, logged in users can list arbitrary system files in the file manager by manipulating the Ajax request. However, it is not possible to read the contents of these files. Users should update to Contao 4.9.40, 4.13.21 or 5.1.4 to receive a patch. There are no known workarounds. |
| CVE-2025-65961 | LOW | 3.3 | Nov 25, 2025 | Contao is an Open Source CMS. From version 4.0.0 to before 4.13.57, before 5.3.42, and before 5.6.5, it is possible to inject code into the template output that will be executed in the browser in the front end and back end. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves not using the affected templates or patch them manually. |
| CVE-2024-28191 | LOW | 3.1 | Apr 9, 2024 | Contao is an open source content management system. Starting in version 4.0.0 and prior to version 4.13.40 and 5.3.4, it is possible to inject insert tags in frontend forms if the output is structured in a very specific way. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, do not output user data from frontend forms next to each other, always separate them by at least one character. |