GHSA-CV43-J772-67WP
Vulnerability from github – Published: 2026-09-19 09:32 – Updated: 2026-09-19 09:32The 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($wpdb->esc_like(...)) and wraps the value in single quotes, this branch completely bypasses those protections. Because the attack payload (SELECT ...) contains no single quotes, WordPress's wp_magic_quotes() provides no protection. This makes it possible for authenticated attackers with administrator-level access to inject arbitrary SQL subqueries — including time-based blind payloads — that can be used to extract sensitive information from the database.
{
"affected": [],
"aliases": [
"CVE-2026-6295"
],
"database_specific": {
"cwe_ids": [
"CWE-89"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-19T08:16:54Z",
"severity": "MODERATE"
},
"details": "The WP Optimizer plugin for WordPress is vulnerable to SQL Injection via the \u0027s\u0027 parameter in all versions up to and including 2.5.0. This is due to an unsafe subquery-detection branch in the Query::parse_key_compare_field() method that, when the user-supplied value matches the regex ^[(\\s]*SELECT\\s+, wraps the value in parentheses and embeds it directly into the SQL string without any escaping or quoting. While the normal LIKE code path correctly uses esc_sql($wpdb-\u003eesc_like(...)) and wraps the value in single quotes, this branch completely bypasses those protections. Because the attack payload (SELECT ...) contains no single quotes, WordPress\u0027s wp_magic_quotes() provides no protection. This makes it possible for authenticated attackers with administrator-level access to inject arbitrary SQL subqueries \u2014 including time-based blind payloads \u2014 that can be used to extract sensitive information from the database.",
"id": "GHSA-cv43-j772-67wp",
"modified": "2026-09-19T09:32:11Z",
"published": "2026-09-19T09:32:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6295"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wp-optimizer/tags/2.3.8/modules/supporters/activity-log/ActivityLog_Table.class.php#L343"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wp-optimizer/tags/2.3.8/vendors/wps-framework/Query.class.php#L455"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wp-optimizer/trunk/modules/supporters/activity-log/ActivityLog_Table.class.php#L343"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wp-optimizer/trunk/vendors/wps-framework/Query.class.php#L455"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/3508033"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/4da302ab-8a5d-481b-8b28-a798e0982893?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
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