Quick answers
- Is CVE-2026-11370 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-11370 being exploited in the wild.
- How severe is CVE-2026-11370?
- Medium severity, with a CVSS score of 6.4, published 24 June 2026.
- Which products and versions are affected?
- JoomUnited WP Meta SEO up to, and including, 4.5.18.
- Is there a fix for CVE-2026-11370?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-11370 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-11370?
- Check whether you run JoomUnited WP Meta SEO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in the WP Meta SEO plugin due to insufficient validation of the 'new_link' parameter. Authenticated attackers with contributor-level permissions or higher can exploit this to make the server initiate outbound HTTP requests to arbitrary IP addresses or domains. The application reflects the HTTP response status code back in an AJAX JSON response, effectively creating an enumeration oracle. This can be leveraged to scan internal network hosts, query local services, or access cloud provider metadata services (e.g., AWS/GCP metadata endpoints). The vulnerability is present in all versions up to and including 4.5.18.
Affected products
- JoomUnited WP Meta SEO up to, and including, 4.5.18
Timeline
- 2026-06-24: disclosed
- 2026-06-24: advisory
References
- https://plugins.trac.wordpress.org/browser/wp-meta-seo/tags/4.5.18/inc/class.metaseo-admin.php
- https://plugins.trac.wordpress.org/browser/wp-meta-seo/tags/4.5.18/inc/class.metaseo-broken-link-table.php
- https://plugins.trac.wordpress.org/browser/wp-meta-seo/tags/4.5.18/inc/class.metaseo-broken-link-table.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2a6e37c1-aaac-4642-bace-234bbc4f6c38?source=cve