CyberRota Analysis
AI-GeneratedThe Contao CMS Feed Reader module is vulnerable due to insufficient validation of RSS feed URLs, allowing backend users with module-edit permissions to initiate requests to internal network services or cloud metadata endpoints. This could lead to Server-Side Request Forgery (SSRF) attacks, potentially exposing sensitive internal resources. Organizations using affected versions (5.3.35 to 5.3.47 and 5.7.0-RC1 to 5.7.8) should prioritize updating to version 5.3.48 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
Contao is an Open Source CMS. From 5.3.35 through 5.3.47 and from 5.7.0-RC1 through 5.7.8, the Feed Reader front-end module passes configured RSS feed URLs from FeedReaderController::getResponse() to feedIo->read() without scheme or private-address validation, allowing a backend user with module-edit permissions to make the server request internal network services, loopback addresses, or cloud metadata endpoints. In core-bundle/src/Controller/FrontendModule/FeedReaderController.php, the getResponse() function iterates over the configured feed URLs and passes each one directly to the HTTP client (via $this->feedIo->read($url, new Feed())) with no validation, while the DCA field definition for rss_feed in tl_module.php carries no URL scheme or host validation and the HTTP client is wired as @psr18.http_client (Symfony HttpClient) with no SSRF protection configured, since NoPrivateNetworkHttpClient is not used. This issue is fixed in versions 5.3.48.