CVE-2026-24582 Overview
CVE-2026-24582 is a Missing Authorization vulnerability [CWE-862] in the WPPOOL FlexTable WordPress plugin. The flaw affects FlexTable versions up to and including 3.24.0. Authenticated attackers with low privileges can exploit incorrectly configured access control security levels over the network. The vulnerability allows unauthorized actions against plugin functionality that should be restricted to higher-privileged roles. Successful exploitation produces a limited integrity impact on the affected WordPress installation without compromising confidentiality or availability.
Critical Impact
Authenticated users with minimal privileges can bypass authorization checks in FlexTable and perform actions reserved for higher-privileged accounts, modifying plugin data within affected WordPress sites.
Affected Products
- WPPOOL FlexTable plugin for WordPress
- All versions from initial release through 3.24.0
- WordPress sites using the sheets-to-wp-table-live-sync plugin package
Discovery Timeline
- 2026-05-25 - CVE-2026-24582 published to NVD
- 2026-05-26 - Last updated in NVD database
Technical Details for CVE-2026-24582
Vulnerability Analysis
The vulnerability stems from missing authorization checks within the FlexTable plugin, classified under [CWE-862]. FlexTable exposes plugin actions that fail to validate whether the requesting user holds the required role or capability. An attacker authenticated as a low-privileged WordPress user, such as a Subscriber or Contributor, can invoke these actions through standard plugin endpoints.
The attack requires network access and low attack complexity. No user interaction is required. The scope remains unchanged, and the impact is limited to integrity of plugin-managed data. Confidentiality and availability are not directly affected by this flaw.
This class of weakness commonly appears in WordPress plugins when developers rely on nonce verification alone without verifying the user's capability through current_user_can() checks. The result is an access control gap that authenticated users can exploit to manipulate plugin state.
Root Cause
The root cause is incorrectly configured access control security levels in FlexTable's request handlers. Specific plugin actions accept input from authenticated users without enforcing capability or role-based authorization. This omission allows any logged-in user to trigger functionality intended for administrators or editors.
Attack Vector
Exploitation requires the attacker to hold a valid low-privileged account on the target WordPress site. The attacker sends crafted HTTP requests to the vulnerable plugin endpoints. Because authorization is not properly enforced, the requests are processed as if issued by an authorized user. Refer to the Patchstack Vulnerability Report for technical details.
Detection Methods for CVE-2026-24582
Indicators of Compromise
- Unexpected modifications to FlexTable-managed tables or plugin settings within the WordPress database.
- WordPress audit log entries showing low-privileged users invoking FlexTable AJAX or REST endpoints.
- Plugin configuration changes that do not correlate with administrator activity.
Detection Strategies
- Review web server access logs for requests from low-privileged sessions targeting FlexTable plugin endpoints under /wp-admin/admin-ajax.php or REST routes registered by the plugin.
- Compare current FlexTable version against 3.24.0 and earlier across all managed WordPress instances.
- Enable a WordPress activity monitoring plugin to capture role and capability context for each privileged action.
Monitoring Recommendations
- Alert on FlexTable plugin actions performed by users with roles below Editor.
- Monitor for sudden spikes in authenticated requests to plugin AJAX handlers.
- Track changes to plugin-controlled tables and configuration values, correlating them with the originating user account.
How to Mitigate CVE-2026-24582
Immediate Actions Required
- Update WPPOOL FlexTable to a version released after 3.24.0 that addresses the missing authorization checks.
- Audit existing WordPress accounts and remove unused low-privileged users that could be leveraged for exploitation.
- Review FlexTable-managed data for unauthorized modifications introduced before patching.
Patch Information
A fixed release should be applied as soon as it is available from WPPOOL. Consult the Patchstack Vulnerability Report for the latest fixed version and vendor guidance.
Workarounds
- Disable the FlexTable plugin until a patched version can be deployed.
- Restrict new user registration on affected WordPress sites to limit available low-privileged accounts.
- Apply a Web Application Firewall (WAF) rule to block requests to FlexTable endpoints from non-administrative sessions.
# Configuration example: temporarily deactivate FlexTable via WP-CLI
wp plugin deactivate sheets-to-wp-table-live-sync
wp plugin status sheets-to-wp-table-live-sync
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
