CVE-2026-59551 Overview
CVE-2026-59551 is a SQL injection vulnerability affecting the rtMedia for WordPress, BuddyPress and bbPress plugin in versions up to and including 4.7.10. The flaw allows an authenticated user with Subscriber-level privileges to inject arbitrary SQL statements into database queries executed by the plugin. Because Subscriber is the lowest privileged authenticated role on most WordPress sites, the barrier to exploitation is low on any site that permits user registration. The issue is tracked under CWE-89 and is documented in the Patchstack WordPress Vulnerability Advisory.
Critical Impact
Authenticated Subscriber-level attackers can extract sensitive data from the WordPress database, including user credentials, session tokens, and private plugin content.
Affected Products
- rtMedia for WordPress, BuddyPress and bbPress plugin versions <= 4.7.10
- WordPress sites running BuddyPress with the rtMedia integration enabled
- WordPress sites running bbPress with the rtMedia integration enabled
Discovery Timeline
- 2026-07-27 - CVE-2026-59551 published to NVD
- 2026-07-27 - Last updated in NVD database
Technical Details for CVE-2026-59551
Vulnerability Analysis
The vulnerability is a SQL injection flaw in the rtMedia plugin, which extends WordPress, BuddyPress, and bbPress with media upload, sharing, and gallery features. Attacker-controlled input reaches a database query without proper sanitization or parameterization. An authenticated Subscriber can craft a request that alters query logic and returns arbitrary rows from the WordPress database.
Because the scope changes on successful exploitation, the impact extends beyond the plugin itself. Sensitive information such as user password hashes stored in wp_users, private post content, session tokens, and application credentials stored by other plugins becomes reachable. Public advisories do not report exploitation in the wild for this CVE.
Root Cause
The root cause is improper neutralization of special elements used in an SQL command, classified as CWE-89. A request parameter accessible to Subscriber users is concatenated into an SQL statement without using the $wpdb->prepare() API or equivalent parameter binding. Standard WordPress escaping helpers such as esc_sql() are either missing or applied to a value that is not treated as a quoted string in the final query.
Attack Vector
Exploitation requires a valid WordPress account at Subscriber level or higher and network access to the target site. The attacker sends a crafted HTTP request to an rtMedia endpoint where the vulnerable parameter is processed. The injected SQL executes with the same database privileges as WordPress itself, giving read access to the entire schema.
The vulnerability mechanism is described in the Patchstack WordPress Vulnerability Advisory. No verified public proof-of-concept code is available at the time of writing.
Detection Methods for CVE-2026-59551
Indicators of Compromise
- HTTP requests from authenticated Subscriber accounts to rtMedia endpoints containing SQL metacharacters such as ', UNION SELECT, SLEEP(, information_schema, or comment sequences (--, #).
- Unusual query patterns in MySQL slow query logs originating from the WordPress database user, particularly queries referencing wp_users or wp_usermeta from rtMedia code paths.
- Newly registered Subscriber accounts followed within minutes by requests to /wp-admin/admin-ajax.php or rtMedia REST routes.
Detection Strategies
- Deploy a web application firewall rule set that flags SQL injection payloads in query string and POST body parameters targeting action=rtmedia_* handlers.
- Enable MySQL general query logging temporarily on staging or high-value sites and alert on UNION, SLEEP, or BENCHMARK tokens issued by the WordPress database user.
- Correlate authentication events for Subscriber accounts with subsequent admin-ajax activity to identify credential-stuffing-to-exploit chains.
Monitoring Recommendations
- Alert on any 500-series responses returned from rtMedia endpoints, which frequently indicate malformed injection attempts.
- Monitor plugin file integrity for buddypress-media/ to detect post-exploitation web shell drops or plugin tampering.
- Track outbound egress from the web server to unfamiliar hosts, which can indicate data exfiltration following successful extraction.
How to Mitigate CVE-2026-59551
Immediate Actions Required
- Update the rtMedia for WordPress, BuddyPress and bbPress plugin to a version later than 4.7.10 as soon as a fixed release is published by the vendor.
- Audit WordPress user accounts and remove or disable unused Subscriber accounts, and disable open user registration where it is not required.
- Rotate WordPress salts in wp-config.php and force a password reset for all users if exploitation is suspected.
Patch Information
Refer to the Patchstack WordPress Vulnerability Advisory for the current fixed version and upgrade instructions. Apply the vendor patch through the WordPress plugin update mechanism and verify the installed version in the admin dashboard after upgrade.
Workarounds
- Deactivate the rtMedia plugin until a patched version can be installed if the site cannot be updated immediately.
- Restrict the subscriber role from calling rtMedia AJAX and REST endpoints using a WAF rule or a custom capabilities filter.
- Set define('DISALLOW_FILE_MODS', true); and enforce least privilege on the WordPress database user by revoking FILE and unnecessary write privileges where feasible.
# Example WP-CLI commands to inventory and disable the vulnerable plugin
wp plugin list --name=buddypress-media --fields=name,status,version
wp plugin deactivate buddypress-media
wp user list --role=subscriber --fields=ID,user_login,user_registered
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
