EUVD-2026-42799
GHSA-vf3c-g465-5cp8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Unauthenticated, network-reachable, low-complexity SQL injection through a public search parameter yields high confidentiality (data exfiltration) with no integrity or availability impact.
Primary rating from Vendor (wordfence).
CVSS VectorVendor: wordfence
Lifecycle Timeline
2DescriptionCVE.org
The Ultimate Member - User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to blind SQL Injection via the search parameter in all versions up to, and including, 2.10.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This vulnerability was partially patched in version 2.9.2 when initially addressing CVE-2025-0308.
AnalysisAI
Blind SQL injection in the Ultimate Member WordPress plugin (all versions through 2.10.1) lets unauthenticated attackers inject arbitrary SQL through the member-directory search parameter, enabling extraction of sensitive database contents such as password hashes and user records. The flaw is a residual gap from the earlier CVE-2025-0308 fix, which was only partially remediated in 2.9.2. No public exploit has been identified at time of analysis, but the plugin's large install base and unauthenticated network reachability make it an attractive target.
Technical ContextAI
The vulnerability lives in the plugin's member-directory feature (includes/core/class-member-directory.php, around lines 1710 and 1866), which builds a database query from the user-supplied 'search' parameter. Rooted in CWE-89 (Improper Neutralization of Special Elements in an SQL Command), the code fails to sufficiently escape the input and does not use a properly parameterized/prepared statement (WordPress $wpdb->prepare), so attacker text is concatenated into the live query. Because results are not directly reflected, exploitation is 'blind' - data is inferred through boolean or time-based query manipulation. The affected component is a stock feature of Ultimate Member, a PHP membership/profile plugin running on the WordPress/MySQL (or MariaDB) stack.
RemediationAI
Upstream fix available (PR/commit); released patched version not independently confirmed - the input references code changesets https://plugins.trac.wordpress.org/changeset/3222364/ultimate-member/trunk/includes/core/class-member-directory.php and https://plugins.trac.wordpress.org/changeset/3265901/ rather than a named release, so upgrade to the latest available Ultimate Member version above 2.10.1 and verify the fix against the vendor advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/8f539e25-5483-417d-a3c5-e7034c03c673?source=cve) before relying on a specific version number. Until patched, place a WAF rule (e.g., Wordfence) in front of the member-directory search endpoint to block SQL metacharacters, and where feasible restrict or disable the public member-directory/search functionality - the trade-off is loss of member-search features for site visitors. Because this is a partial-patch bypass, confirm the update actually addresses CVE-2026-15290 and not only the earlier CVE-2025-0308.
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Same weakness CWE-89 – SQL Injection
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External POC / Exploit Code
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