Skip to content
Patch Next
Sign inAdd to your agent

← Actionable
Low, CVSS 3.1amended

Contao: Server-Side Request Forgery (SSRF) via Unvalidated RSS Feed URL in Feed Reader Module

CVE-2026-57232GHSA-87mg-5grr-rhwh

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (contao/contao 5.7.9, 5.3.48; contao/core-bundle 5.7.9, 5.3.48), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

Add to your agent

Affected packages

  • Packagist contao/contao

    Affected
    >= 5.3.35, < 5.3.48>= 5.4.0, < 5.7.9
    Fixed in
    5.3.48, 5.7.9

  • Packagist contao/core-bundle

    Affected
    >= 5.3.35, < 5.3.48>= 5.4.0, < 5.7.9
    Fixed in
    5.3.48, 5.7.9

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
3.1 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
  • CVE-2026-57232: 0.29% estimated exploitation activity in the next 30 days; percentile 21.59 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary The Feed Reader front-end module passes RSS feed URLs from its configuration directly to $this-feedIo-read($url) without any scheme validation or private-IP blocklist. A backend user with module-edit permissions can configure an arbitrary URL pointing to internal network services, cloud-provider metadata endpoints, or loopback addresses, causing the server to fetch those resources unconditionally. Confirmed live: the server successfully reaches the internal MySQL database container and its own loopback Apache instance. --- Details 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 with no validation: The DCA field definition for rssfeed in tlmodule.php carries no URL scheme or host validation: The HTTP client is wired as @psr18.httpclient (Symfony HttpClient) with no SSRF protection configured (NoPrivateNetworkHttpClient is not used). ---…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-87mg-5grr-rhwh

  2. Revision 1 · created ·

    Published from osv record GHSA-87mg-5grr-rhwh

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-57232

Advisory: Contao: Server-Side Request Forgery (SSRF) via Unvalidated RSS Feed URL in Feed Reader Module
IDs: CVE-2026-57232, GHSA-87mg-5grr-rhwh
Record: https://patchnext.com/advisories/cve-2026-57232 (revision 2, source checked 26 Oct 2026, 14:53 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: contao/contao 5.7.9, 5.3.48; contao/core-bundle 5.7.9, 5.3.48. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist contao/contao: affected >= 5.3.35, < 5.3.48; >= 5.4.0, < 5.7.9; fixed in 5.3.48, 5.7.9
- Packagist contao/core-bundle: affected >= 5.3.35, < 5.3.48; >= 5.4.0, < 5.7.9; fixed in 5.3.48, 5.7.9

## Suggested inspection (read-only)
- Packagist contao/contao: check the installed version with your package manager.
- Packagist contao/core-bundle: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on contao/contao, contao/core-bundle.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-87mg-5grr-rhwh (OSV record GHSA-87mg-5grr-rhwh lists affected ranges: Packagist contao/contao >=5.3.35 =5.4.0 =5.3.35 =5.4.0 <5.7.9 (fixed))
- Verified: https://github.com/advisories/GHSA-87mg-5grr-rhwh (GitHub-reviewed advisory GHSA-87mg-5grr-rhwh lists affected ranges: Packagist contao/contao >=5.3.35 =5.4.0 =5.3.35 =5.4.0 <5.7.9)

Commands are suggestions: review each one before running it.

Loading voting…