WordPress 6.3.9

WordPress 6.3.9 has 3 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2026; all 3 are fixed as of August 2026. Their average CVSS score is 5.9, and the most serious one scores 8.8 out of 10. Severity breakdown: 0 critical and 1 high.

The most common weakness is Exposure Of Sensitive Information To An Unauthorized Actor, behind 1 of the records (33%). Other recurring categories include Unrestricted Upload Of File With Dangerous Type, Weak Encoding For Password.

Every one of the 3 issues recorded for WordPress 6.3.9 has a vendor fix available, so running the current release closes all known holes.

2 independent researchers contributed these findings, one record each.

Strategic Overview

Avg CVSSMedium

5.9/ 10

Patch Coverage100%

Open

Fixed

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Highest severity on recordCVSS 8.8CVE-2026-65640

WordPress Core <= 7.0.3 - Authenticated (Author+) Remote Code Execution via Malicious File Upload

Read the full analysis

Vulnerability Records

3 records


2026-08-12 00:00	WordPress Core <= 7.0.3 - Authenticated (Author+) Remote Code Execution via Malicious File Upload WordPress 6.3.9 4.7.0 – 7.0.3 · 24 branches	`CVE-2026-65640`	8.8 High	pwn.ai Team	Yes
2024-04-04 00:00	WordPress Core <= 6.4.3 - Sensitive Information Exposure via redirect_guess_404_permalink WordPress 6.3.9 <= 6.4.3	`CVE-2023-5692`	5.3 Medium	Francesco Carlucci	Yes
2012-06-20 00:00	WordPress Core - Informational < 6.8 - Weak Hashing Algorithm WordPress 6.3.9 < 6.8	`CVE-2012-6707`	3.7 Low	Anonymous	Yes

Showing 1–3 of 3 reports