Shopware: SSRF in Media External-Link Endpoint Bypasses IP Validation

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.1 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

EPSS

• CVE-2026-48013: 0.37% estimated exploitation activity in the next 30 days; percentile 30.55 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The /api/action/media/external-link endpoint allows authenticated admin users to make server-side HTTP HEAD requests to arbitrary internal IP addresses. While the parallel uploadFromURL flow validates target IPs against private/reserved ranges via FileUrlValidator, the linkURL flow only performs a URL format check (regex for http:// or https:// prefix), allowing SSRF to internal network services and cloud metadata endpoints. Details The vulnerability is an inconsistency between two URL-handling flows in MediaUploadService. Vulnerable path (external-link): MediaUploadV2Controller::externalLink() at src/Core/Content/Media/Api/MediaUploadV2Controller.php:66 takes a user-supplied url parameter and passes it to MediaUploadService::linkURL() at src/Core/Content/Media/Upload/MediaUploadService.php:134. linkURL() calls getContentSizeFromValidExternalUrl($url) at line 159, which only validates via validateExternalUrl(): Then makes a server-side HEAD request with no IP filtering:…

Published by the source

4 Jun 2026, 19:36 UTC

Last modified by the source

4 Jun 2026, 19:36 UTC

Source last checked

26 Oct 2026, 14:48 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-gq96-5pfx-f4vc

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

# Patch Next advisory brief: CVE-2026-48013

Advisory: Shopware: SSRF in Media External-Link Endpoint Bypasses IP Validation
IDs: CVE-2026-48013, GHSA-gq96-5pfx-f4vc
Record: https://patchnext.com/advisories/cve-2026-48013 (revision 1, source checked 26 Oct 2026, 14:48 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: shopware/core 6.7.10.1; shopware/platform 6.7.10.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist shopware/core: affected >= 6.7.0.0, < 6.7.10.1; fixed in 6.7.10.1
- Packagist shopware/platform: affected >= 6.7.0.0, < 6.7.10.1; fixed in 6.7.10.1

## Suggested inspection (read-only)
- Packagist shopware/core: check the installed version with your package manager.
- Packagist shopware/platform: 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 shopware/core, shopware/platform.
- 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://github.com/advisories/GHSA-gq96-5pfx-f4vc (GitHub-reviewed advisory GHSA-gq96-5pfx-f4vc lists affected ranges: Packagist shopware/core >=6.7.0.0 =6.7.0.0 <6.7.10.1)

Commands are suggestions: review each one before running it.