WordPress 4.3.23
WordPress 4.3.23 has 61 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2025; all 61 are fixed as of August 2026. Their average CVSS score is 6.2, and the most serious one scores 9.8 out of 10. Severity breakdown: 2 critical and 17 high. 2022 was the busiest year with 20 disclosures.
The most common weakness is Cross-Site Scripting, behind 17 of the records (28%). Other recurring categories include Exposure Of Sensitive Information To An Unauthorized Actor, Cross-Site Request Forgery (CSRF).
Every one of the 61 issues recorded for WordPress 4.3.23 has a vendor fix available, so running the current release closes all known holes.
38 independent researchers contributed these findings, most of them (5) reported by Alex Concha.
WordPress Core < 6.0.3 - SQL Injection via WP_Date_Query
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