EUVD-2026-340398

fkie_cve-2026-48013

Shopware is an open commerce platform. Prior to 6.6.10.18 and 6.7.10.1, 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. This issue is fixed in versions 6.6.10.18 and 6.7.10.1.

GHSA-gq96-5pfx-f4vc — Shopware: SSRF in Media External-Link Endpoint Bypasses IP Validation

Affected: Packagist: shopware/core, Packagist: shopware/platform

## 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()`:

```php // src/Core/Content/Media/Upload/MediaUploadService.php:207-212 public static function validateExternalUrl(string $url): void { if (!preg_match('/^https?:\/\/.+/', $url)) { throw MediaException::invalidUrl($url); } } ```

Then makes a server-side HEAD request with no IP filtering:

```php // src/Core/Content/Media/Upload/MediaUploadService.php:292-300 private function getContentSizeFromValidExternalUrl(string $url): int { $this->validateExternalUrl($url);

$headers = $this->httpCl…

Most recent entries from all

EUVD-2026-340398

fkie_cve-2026-48013

GHSA-gq96-5pfx-f4vc — Shopware: SSRF in Media External-Link Endpoint Bypasses IP Validation