CVE-2026-57232
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
contao/contaoPackagist | >= 5.3.35, < 5.3.48 | 5.3.48 |
contao/contaoPackagist | >= 5.4.0, < 5.7.9 | 5.7.9 |
contao/core-bundlePackagist | >= 5.3.35, < 5.3.48 | 5.3.48 |
contao/core-bundlePackagist | >= 5.4.0, < 5.7.9 | 5.7.9 |
Affected products
1Patches
Vulnerability mechanics
References
10- github.com/advisories/GHSA-87mg-5grr-rhwhghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-57232ghsaADVISORY
- contao.org/en/security-advisories/server-side-request-forgery-via-unvalidated-rss-feed-urlsghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2026-57232.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2026-57232.yamlghsaWEB
- github.com/contao/contao/commit/27f6201809553bee767dcef15535bb8f0f4eac5fnvdWEB
- github.com/contao/contao/commit/53b939ff2c4718e3a1d7c54ddd8886e9370618e4nvdWEB
- github.com/contao/contao/releases/tag/5.3.48ghsaWEB
- github.com/contao/contao/releases/tag/5.7.9ghsaWEB
- github.com/contao/contao/security/advisories/GHSA-87mg-5grr-rhwhnvdWEB
News mentions
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