WordPress 4.5.27
WordPress 4.5.27 has 32 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2025; all 32 are fixed as of August 2026. Their average CVSS score is 6.1, and the most serious one scores 9.8 out of 10. Severity breakdown: 1 critical and 7 high. 2022 was the busiest year with 12 disclosures.
The most common weakness is Cross-Site Scripting, behind 8 of the records (25%). Other recurring categories include Exposure Of Sensitive Information To An Unauthorized Actor, Cross-Site Request Forgery (CSRF).
Every one of the 32 issues recorded for WordPress 4.5.27 has a vendor fix available, so running the current release closes all known holes.
23 independent researchers contributed these findings, most of them (3) reported by Alex Concha.
WordPress Core < 6.0.3 - SQL Injection via WP_Date_Query
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