CVE-2026-7624: Squirrly SEO Auth Bypass Vulnerability

CVE-2026-7624 Overview

CVE-2026-7624 is an authorization bypass vulnerability in the SEO Plugin by Squirrly SEO for WordPress. The flaw affects all versions up to and including 12.4.16. The plugin fails to verify that a user is authorized to perform privileged state-changing actions before invoking Squirrly cloud API operations. Authenticated attackers with contributor-level access or above can invoke administrative endpoints such as api/gsc/revoke and api/ga/revoke. These endpoints are intended to be restricted to administrator-level users holding the sq_manage_settings capability. The issue is tracked as CWE-862: Missing Authorization.

Critical Impact
Contributor-level users can revoke the site's Google Search Console and Google Analytics integrations, disrupting SEO operations and search visibility data collection.

Affected Products

SEO Plugin by Squirrly SEO for WordPress — all versions up to and including 12.4.16
Affected source files: classes/RemoteController.php and controllers/Post.php
Squirrly cloud API endpoints api/gsc/revoke and api/ga/revoke

Discovery Timeline

2026-06-06 - CVE-2026-7624 published to NVD
2026-06-08 - Last updated in NVD database

Technical Details for CVE-2026-7624

Vulnerability Analysis

The vulnerability stems from missing authorization checks in the Squirrly SEO plugin's remote controller logic. The plugin exposes state-changing actions through its RemoteController class and Post controller without confirming that the caller holds the sq_manage_settings capability. As a result, any authenticated user with contributor-level access or higher can trigger administrative operations against the Squirrly cloud backend. The impact is limited to integrity loss: an attacker can revoke the site's Google Search Console (GSC) and Google Analytics (GA) integrations. Doing so disconnects the site from its SEO data sources, breaks reporting, and forces administrators to re-authorize external services. The vulnerability does not enable direct code execution, data exfiltration, or denial of service against WordPress itself.

Root Cause

The root cause is a missing authorization check [CWE-862] on the handlers behind api/gsc/revoke and api/ga/revoke. The plugin relies on a generic authentication check rather than verifying the user-specific capability sq_manage_settings. Vulnerable code paths are present in classes/RemoteController.php around lines 51 and 573, and in controllers/Post.php around lines 680 and 683 of versions 12.4.15 and 12.4.16. See the WordPress Squirrly SEO Source and the Wordfence Vulnerability Report for line-level references.

Attack Vector

An attacker authenticates to the target WordPress site using any account at contributor level or higher. The attacker then issues a request to the plugin's exposed action handler that proxies to the Squirrly cloud API. Because the handler does not enforce sq_manage_settings, the request succeeds and revokes the site's GSC or GA integration. The attack is network-reachable and requires low privileges with no user interaction. Refer to the upstream patch in the Squirrly SEO Changeset 3558846 for the exact remediation diff.

Detection Methods for CVE-2026-7624

Indicators of Compromise

Unexpected disconnection of Google Search Console or Google Analytics integrations in Squirrly SEO settings without administrator action.
HTTP requests from authenticated low-privilege sessions targeting WordPress admin-ajax or REST endpoints that map to Squirrly api/gsc/revoke or api/ga/revoke actions.
Squirrly cloud account logs showing revoke operations originating from sites where administrators did not initiate the change.

Detection Strategies

Audit WordPress access logs for POST requests to Squirrly action handlers originating from non-administrator user sessions.
Correlate WordPress user role data with the user ID associated with revoke calls to identify capability mismatches.
Monitor plugin settings change events through WordPress audit logging plugins for unauthorized state transitions on Squirrly integrations.

Monitoring Recommendations

Enable WordPress audit logging to capture role changes, plugin setting modifications, and Squirrly API invocations by user ID.
Forward web server and PHP error logs to a centralized log platform and alert on revoke-related Squirrly endpoint activity from contributor or author accounts.
Track the installed Squirrly SEO plugin version across all managed WordPress sites and alert on instances at or below 12.4.16.

How to Mitigate CVE-2026-7624

Immediate Actions Required

Update the Squirrly SEO plugin to the version released after 12.4.16 that contains the authorization fix from changeset 3558846.
Review WordPress user accounts and remove or downgrade any contributor-or-above accounts that are not actively needed.
Verify that Google Search Console and Google Analytics integrations remain connected and re-authorize them if they were unexpectedly revoked.

Patch Information

The vendor addressed the missing authorization check in the commit recorded as Squirrly SEO changeset 3558846. Administrators should upgrade to the first released version above 12.4.16 that includes this changeset. Refer to the Wordfence Vulnerability Report for fixed version tracking.

Workarounds

Restrict new user registrations and require administrator approval before granting contributor-or-above roles.
Use a WordPress capability management plugin or web application firewall rule to block requests to Squirrly revoke action handlers when the caller lacks the sq_manage_settings capability.
Temporarily deactivate the Squirrly SEO plugin on sites where untrusted contributor accounts exist until the patched version is deployed.

bash

# Update Squirrly SEO via WP-CLI on affected WordPress installations
wp plugin update squirrly-seo --version=latest
wp plugin get squirrly-seo --field=version