CVE Catalog

CVE-2026-15947

MediumCVSS 4.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

12th percentile - higher than 12% of all known CVEs

Summary

The Metasync plugin for WordPress in versions up to and including 2.6.23 is vulnerable to unauthorized data modification due to a missing capability check in the save_instant_indexing_settings() function. The function is hooked to admin_init and only checks for $_POST['submit'] before writing attacker-supplied $_POST['metasync_post_types'] into the site-wide 'metasync_options_instant_indexing' option, with no current_user_can() check and no nonce verification.

Risk Assessment

An authenticated attacker with Subscriber-level access or above can modify the site's Google Instant Indexing post-type configuration, potentially causing uncontrolled content submission to Google's Instant Indexing service.

Recommendation

Update the Metasync plugin to a version newer than 2.6.23 once available, and in the meantime consider disabling it or restricting access to the admin panel.

Related vulnerabilities

Original NVD description (English source)

The Metasync plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_instant_indexing_settings() function in versions up to, and including, 2.6.23. This function is registered on the admin_init hook and only checks for the presence of $_POST['submit'] before writing attacker-supplied $_POST['metasync_post_types'] into the site-wide 'metasync_options_instant_indexing' option via update_option(); no current_user_can()/current_user_has_plugin_access() check and no nonce verification are performed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the site's Google Instant Indexing post-type configuration, controlling which post types are auto-submitted to Google's Instant Indexing service.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS