Security advisories
Here you will find a list of vulnerabilities that have already been found and fixed in Contao. If you think that you have found a security issue in Contao, please report it according to our security policy.
Session cookie disclosure in the crawler
by Leo Feyer
Date: 2024-04-09
CVE ID: CVE-2024-28235
If the crawler is set to crawl protected pages, it sends the cookie header to externals URLs.
Affected versions
Contao 4.0
Contao 4.1
Contao 4.2
Contao 4.3
Contao 4.4
Contao 4.5
Contao 4.6
Contao 4.7
Contao 4.8
Contao 4.9
Contao 4.10
Contao 4.11
Contao 4.12
Contao 4.13 up to 4.13.39
Contao 5.0
Contao 5.1
Contao 5.2
Contao 5.3 up to 5.3.3
Suggested solution
Upgrade to Contao 4.13.40 or 5.3.4.
Workaround
Disable crawling protected pages.
More information
https://github.com/contao/contao/security/advisories/GHSA-9jh5-qf84-x6pr
