WordPress 5.3.15
WordPress 5.3.15 has 12 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2025; all 12 are fixed as of August 2026. Their average CVSS score is 5.4, and the most serious one scores 8.1 out of 10. Severity breakdown: 0 critical and 1 high. 2023 was the busiest year with 4 disclosures.
The most common weakness is Exposure Of Sensitive Information To An Unauthorized Actor, behind 3 of the records (25%). Other recurring categories include Cross-Site Scripting, Improper Input Validation.
Every one of the 12 issues recorded for WordPress 5.3.15 has a vendor fix available, so running the current release closes all known holes.
11 independent researchers contributed these findings, one record each.
CVE-2021-44223WordPress Core < 5.8 - Dependency Confusion
Read the full analysisVulnerability Records
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