Security incident · CVE-2026-48013
SSRF in Media External-Link Endpoint Bypasses IP Validation
Published May 19, 2026 · catalog updated May 20, 2026 · SSRF in Media External-Link
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-48013. EPSS is 0.37%. Act only if a listed version of SSRF in Media External-Link is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (SSRF in Media External-Link).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium4.1
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.37%
- Remediation
- Version ranges on file
- Affected products
- composer shopware/core · composer shopware/platform
## Summary The endpoint allows authenticated admin users to make server-side HTTP HEAD requests to arbitrary internal IP addresses. While the parallel flow validates target IPs against private/reserved ranges via , the flow only performs a URL format check (regex for or prefix), allowing SSRF to internal network services and cloud metadata endpoints. ## Details The vulnerability is an inconsistency between two URL-handling flows in . **Vulnerable path** ( ): at takes a user-supplied parameter and passes it to at . calls at line 159, which only validates via : Then makes a server-side HEAD request with no IP filtering: **Protected path** ( ): In contrast, uses which calls : resolves the hostname via and validates the IP against private and reserved ranges using with . This protection is entirely absent from the flow. ## Impact An authenticated admin user can: 1. **Probe cloud metadata services** — HEAD requests to reveal whether cloud metadata endpoints exist and leak content-length values 2. **Scan internal networks** — Differentiate open/closed/filtered ports on internal hosts (10.x, 172.16.x, 192.168.x) based on response timing and error types 3. **Leak internal service information** — The field stored in the database reflects the header from internal services 4. **Redirect-based escalation** — Symfony HttpClient follows redirects by default (max_redirects=20), allowing an attacker-controlled external server to redirect the HEAD request to arbitrary internal destinations Impact is limited to information disclosure via HEAD requests. The admin authentication requirement (PR:H) reduces exploitability, but in multi-tenant or compromised-credential scenarios this allows network reconnaissance from the server's perspective. ## Recommended Fix Apply to the flow, consistent with the flow. In : Additionally, consider setting on the HttpClient request to prevent redirect-based SSRF bypasses.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- composer shopware/core>=6.7.0.0 <6.7.10.1
- composer shopware/platform>=6.7.0.0 <6.7.10.1
How to fix CVE-2026-48013
Upgrade
CVE-2026-48013 lists a fix boundary at 6.7.10.1. Compare the installed build with that boundary before you change production.
Version check
Seen in >=6.7.0.0 <6.7.10.1 · 1 other packages on the advisory
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-48013. EPSS is 0.37%. Act only if a listed version of SSRF in Media External-Link is installed.
Which versions are affected?
Compare what you have installed with >=6.7.0.0 <6.7.10.1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-918: Server-Side Request Forgery (SSRF). EPSS 0.37%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 19, 2026 · Maintainer security tabs
Detected
## Summary The endpoint allows authenticated admin users to make server-side HTTP HEAD requests to arbitrary internal IP addresses. While the parallel flow validates target IPs against private/reserved ranges via , the flow only performs a URL format check (regex for or prefix), allowing SSRF to internal network services and cloud metadata endpoints. ## Details The vulnerability is an inconsistenc
May 20, 2026 · Maintainer security tabs
Updated
## Summary The endpoint allows authenticated admin users to make server-side HTTP HEAD requests to arbitrary internal IP addresses. While the parallel flow validates target IPs against private/reserved ranges via , the flow only performs a URL format check (regex for or prefix), allowing SSRF to internal network services and cloud metadata endpoints. ## Details The vulnerability is an inconsistenc
Sources
- CVE.orgVulnerability recordCVE-2026-48013
Official CVE identifier
cve.org - Maintainer security tabsVendor advisoryGHSA-gq96-5pfx-f4vc
## Summary The endpoint allows authenticated admin users to make server-side HTTP HEAD requests to arbitrary internal IP addresses. While the parallel flow validates target IPs against private/reserved ranges via , the flow only performs a URL format check (regex for or prefix), allowing SSRF to internal network services and cloud metadata endpoints. ## Details The vulnerability is an inconsistenc
github.com
Freshness
Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- CVE.orgNov 2, 2026
- Maintainer security tabsNov 2, 2026