CVE-2026-6295 - WP Optimizer <= 2.5.0 - Authenticated (Administrator+) SQL Injection via 's' Parameter

CVE-2026-6295 - WP Optimizer <= 2.5.0 - Authenticated (Administrator+) SQL Injection via 's' Parameter

https://cvefeed.io/rssfeed/latest.atom / Sat, 09/19/2026 - 13:33
CVE ID :CVE-2026-6295
Published : Sept. 19, 2026, 8:16 a.m. | 2 hours, 52 minutes ago
Description :The WP Optimizer plugin for WordPress is vulnerable to SQL Injection via the 's' parameter in all versions up to and including 2.5.0. This is due to an unsafe subquery-detection branch in the Query::parse_key_compare_field() method that, when the user-supplied value matches the regex ^[(\s]*SELECT\s+, wraps the value in parentheses and embeds it directly into the SQL string without any escaping or quoting. While the normal LIKE code path correctly uses esc_sql($wpdb->esc_like(...)) and wraps the value in single quotes, this branch completely bypasses those protections. Because the attack payload (SELECT ...) contains no single quotes, WordPress's wp_magic_quotes() provides no protection. This makes it possible for authenticated attackers with administrator-level access to inject arbitrary SQL subqueries — including time-based blind payloads — that can be used to extract sensitive information from the database.
Severity: 4.9 | MEDIUM
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