CVE-2026-11370

WP Meta SEO <= 4.5.18 - Authenticated (Contributor+) Server-Side Request Forgery via 'new_link' Parameter

2026-06-23 16:46
Enes Ismail

Strategic Overview

Status
Unpatched
Affected Plugin
WP Meta SEO
Affected Version
<= 4.5.18
CVSS
6.4Medium
Weakness type
CWE-918 · Server-Side Request Forgery (SSRF)
CVE
CVE-2026-11370
View all WP Meta SEO vulnerabilities

At a glance

CVE-2026-11370 is a medium-severity Server-Side Request Forgery (SSRF) vulnerability in the WP Meta SEO WordPress plugin, affecting versions <= 4.5.18. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed June 2026, reported by Enes Ismail.

Vulnerability Overview

The WP Meta SEO plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 4.5.18 via the 'new_link' parameter. This makes it possible for authenticated attackers, with contributor-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. The HTTP response status from outbound requests is reflected back in the AJAX JSON response as status_code, providing an enumeration oracle usable for probing internal hosts and cloud metadata services.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-918: Server-Side Request Forgery (SSRF)

WP Meta SEO <= 4.5.18 carries this weakness at new_link, and reaching it takes an account at Contributor level or above. Server-side request forgery means the application fetches a URL supplied by the caller, turning the server into a proxy for requests the attacker could not make directly.

The request originates from inside the hosting network, which is how these flaws reach cloud metadata endpoints, internal admin panels and services that trust local traffic. No fixed build of this plugin is recorded for WP Meta SEO yet, so installs running <= 4.5.18 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-11370https://www.wordfence.com/threat-intel/vulnerabilities/id/2a6e37c1-aaac-4642-bace-234bbc4f6c38https://nvd.nist.gov/vuln/detail/CVE-2026-11370

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C