CVE-2026-6295 json
WP Optimizer <= 2.5.0 - Authenticated (Administrator+) SQL Injection via 's' Parameter
published 2026-09-19 50 d ago modified 2026-09-21 48 d ago also EUVD-2026-83544
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 50 d ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
Affected products
- sh1zen WP Optimizer – PageSpeed, Cache, Minify & Core Web Vitals
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
References
- wordfence.com /threat-intel/vulnerabilities/id/4da302ab-8a5d-481b-8b28-a798e0982893?source=cve
- plugins.trac.wordpress.org /browser/wp-optimizer/trunk/vendors/wps-framework/Query.class.php#L455
- plugins.trac.wordpress.org /browser/wp-optimizer/tags/2.3.8/vendors/wps-framework/Query.class.php#L455
- plugins.trac.wordpress.org /browser/wp-optimizer/trunk/modules/supporters/activity-log/ActivityLog_Table.class.php#L343
- plugins.trac.wordpress.org /browser/wp-optimizer/tags/2.3.8/modules/supporters/activity-log/ActivityLog_Table.class.php#L343
- plugins.trac.wordpress.org /changeset/3508033
Sources
- CVE List CVE-2026-6295
- NVD CVE-2026-6295
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.