CVE-2025-14342 Overview
The SEO Plugin by Squirrly SEO for WordPress contains a missing capability check vulnerability in the sq_ajax_uninstall function. This authorization bypass flaw affects all versions up to and including 12.4.14, allowing authenticated attackers with low-level privileges (Subscriber-level access and above) to disconnect websites from Squirrly's cloud service without proper authorization.
Critical Impact
Authenticated users with minimal privileges can perform unauthorized administrative actions, potentially disrupting SEO services and site functionality by disconnecting the cloud integration.
Affected Products
- Squirrly SEO Plugin for WordPress versions up to and including 12.4.14
- WordPress sites utilizing Squirrly SEO cloud services
- Any WordPress installation with the vulnerable plugin and subscriber-level user accounts
Discovery Timeline
- 2026-02-19 - CVE-2025-14342 published to NVD
- 2026-02-19 - Last updated in NVD database
Technical Details for CVE-2025-14342
Vulnerability Analysis
This vulnerability falls under CWE-862 (Missing Authorization), a critical class of access control flaws. The sq_ajax_uninstall function in the Squirrly SEO plugin fails to implement proper capability checks before executing privileged operations. In WordPress, capability checks are essential security mechanisms that verify whether a user has the appropriate permissions to perform a specific action.
When capability checks are missing, any authenticated user—regardless of their assigned role—can invoke the vulnerable function. In this case, even users with the lowest privilege level (Subscriber) can trigger the uninstall/disconnect functionality that should be restricted to administrators only.
Root Cause
The root cause is the absence of a capability check within the sq_ajax_uninstall function located in the SeoSettings.php controller file. WordPress provides functions like current_user_can() to verify user permissions before executing sensitive operations. The vulnerable code path allows the AJAX action to execute without verifying that the requesting user possesses administrative privileges.
The vulnerable code can be reviewed in the WordPress Plugin Code Review for the affected version.
Attack Vector
The attack is network-based and requires low privileges to execute. An attacker who has obtained or created a Subscriber-level account on a WordPress site running the vulnerable plugin can craft an AJAX request to invoke the sq_ajax_uninstall function. This request would disconnect the site from Squirrly's cloud service, potentially disrupting SEO functionality and any cloud-based features the site relies upon.
The attack requires no user interaction and can be executed remotely, though the attacker must have valid authentication credentials for at least a Subscriber-level account. The vulnerability impacts data integrity by allowing unauthorized modification of the site's configuration state.
Detection Methods for CVE-2025-14342
Indicators of Compromise
- Unexpected AJAX requests to WordPress admin-ajax.php with the sq_ajax_uninstall action parameter from non-administrator users
- Squirrly SEO cloud service disconnections without corresponding administrator activity in audit logs
- Subscriber or low-privilege user accounts making requests to SEO plugin endpoints
Detection Strategies
- Monitor WordPress AJAX endpoints for calls to sq_ajax_uninstall action from users without administrator capabilities
- Implement logging for Squirrly SEO plugin configuration changes and correlate with user role information
- Deploy web application firewall rules to flag or block suspicious AJAX requests targeting the vulnerable function
Monitoring Recommendations
- Enable comprehensive WordPress audit logging to track all user actions and capability usage
- Review user account activity, particularly for Subscriber-level accounts making administrative requests
- Monitor for sudden loss of Squirrly cloud connectivity which may indicate exploitation
How to Mitigate CVE-2025-14342
Immediate Actions Required
- Update the Squirrly SEO plugin to the latest patched version immediately
- Review WordPress audit logs for any suspicious activity targeting the sq_ajax_uninstall function
- Consider temporarily restricting user registration or removing unnecessary Subscriber-level accounts until patching is complete
- Verify Squirrly cloud service connectivity status after updating
Patch Information
A security patch has been released to address this vulnerability. The fix can be reviewed in the WordPress Plugin Changeset which adds the missing capability check to the sq_ajax_uninstall function. Site administrators should update to the latest version through the WordPress plugin update mechanism.
Additional technical details and vulnerability information are available in the Wordfence Vulnerability Report.
Workarounds
- Temporarily disable the Squirrly SEO plugin if immediate updating is not possible
- Implement web application firewall rules to block AJAX requests containing the sq_ajax_uninstall action parameter from non-administrator users
- Remove or suspend unnecessary user accounts with Subscriber-level access until the plugin is updated
# WordPress CLI command to update the plugin
wp plugin update squirrly-seo
# Verify the installed version after update
wp plugin get squirrly-seo --field=version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
