{"id":"CVE-2026-57232","title":"Contao is an Open Source CMS","summary":"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 priv…","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-918"],"published":"2026-07-31","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57232","references":[{"url":"https://github.com/contao/contao/commit/27f6201809553bee767dcef15535bb8f0f4eac5f","label":"security-advisories@github.com"},{"url":"https://github.com/contao/contao/commit/53b939ff2c4718e3a1d7c54ddd8886e9370618e4","label":"security-advisories@github.com"},{"url":"https://github.com/contao/contao/security/advisories/GHSA-87mg-5grr-rhwh","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00182,"epssPercentile":0.08014,"ingestedAt":"2026-09-08T21:11:12.261Z","slug":"CVE-2026-57232","body":"## Overview\n\nContao 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}