CVE-2026-24579: 
WordPress vulnerability analysis and mitigation

CVE-2026-24579 is a Missing Authorization (Broken Access Control) vulnerability in the "Ai Image Alt Text Generator for WP" WordPress plugin developed by WP Messiah. It allows authenticated attackers with low privileges (Subscriber-level) to exploit incorrectly configured access control security levels, potentially performing actions beyond their intended permissions. The vulnerability affects all plugin versions up to and including 1.1.9, and was published on January 23, 2026. It carries a CVSS v3.1 base score of 4.3 (Medium), assigned by Patchstack (Patchstack).

The root cause is classified as CWE-862 (Missing Authorization), meaning the plugin fails to properly verify whether a requesting user has the necessary permissions before executing certain privileged actions. This is a network-accessible vulnerability (attack vector: network) requiring low privileges and no user interaction, consistent with a missing capability or nonce check on one or more plugin functions. The vulnerability was discovered and reported by security researcher Nabil Irawan and disclosed through Patchstack on January 20, 2026 (Patchstack). No public proof-of-concept code has been identified at this time.

Successful exploitation allows a low-privileged authenticated user (e.g., a Subscriber) to perform unauthorized actions within the WordPress site, resulting in a limited integrity impact (CVSS integrity impact: Low). Confidentiality and availability are not directly affected according to the current CVSS scoring. The practical impact is constrained to unauthorized modification of plugin-controlled data or settings, but in a shared or multi-tenant WordPress environment, this could be leveraged to tamper with image alt text generation settings or related content (Patchstack).

No active in-the-wild exploitation has been reported for CVE-2026-24579. The EPSS score is approximately 0.017% (0.000170), indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Patchstack notes that vulnerabilities of this class are sometimes used in mass-exploit campaigns targeting WordPress plugins at scale, regardless of site popularity, but assesses this specific issue as low priority with unlikely exploitation (Patchstack).

1. Reconnaissance: Identify WordPress sites running the "Ai Image Alt Text Generator for WP" plugin at version 1.1.9 or earlier, using tools like WPScan or by checking the plugin's readme.txt file accessible at https://target.com/wp-content/plugins/ai-image-alt-text-generator-for-wp/readme.txt.
2. Obtain low-privilege account: Register or obtain a Subscriber-level (or equivalent low-privilege) account on the target WordPress site.
3. Identify unprotected endpoint: Enumerate plugin AJAX actions or admin-post endpoints that lack proper capability checks, typically by reviewing the plugin's PHP source code for add_action('wp_ajax_nopriv_*') or add_action('wp_ajax_*') hooks without corresponding current_user_can() checks.
4. Send unauthorized request: Craft and send an authenticated HTTP POST request (with valid WordPress authentication cookies) to the identified unprotected endpoint, invoking the privileged action (e.g., modifying plugin settings or triggering alt text generation for arbitrary images).
5. Achieve unauthorized action: The server processes the request without verifying the user's authorization level, allowing the attacker to perform the restricted action and alter plugin behavior or site content (Patchstack).

• Logs: WordPress access logs showing authenticated POST requests from low-privilege user accounts to plugin-specific AJAX endpoints (e.g., wp-admin/admin-ajax.php with plugin-specific action parameters) at unusual times or frequencies.
• Application Logs: WordPress debug logs recording unexpected execution of plugin functions by Subscriber-level users.
• File System: Unexpected changes to plugin configuration files or WordPress options table entries related to the ai-image-alt-text-generator-for-wp plugin.
• Database: Modifications to wp_options table rows associated with the plugin's settings by non-administrative user accounts.

As of the disclosure date, no official patched version of the plugin has been released by WP Messiah. Site administrators are advised to deactivate and remove the "Ai Image Alt Text Generator for WP" plugin until a patched version becomes available. As a compensating control, restrict user registration and minimize the number of accounts with Subscriber-level or higher access. Patchstack users with an active subscription may benefit from virtual patching that mitigates the vulnerability at the WAF level without requiring a plugin update (Patchstack).