Threat intelligence

Security Hardener <= 2.4.4 - Authenticated (Subscriber+) Privilege Escalation via REST API '/wp/v2/users' permission_callback Overwrite

CVE-2026-16149 · security-hardener

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Security Hardener at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Security Hardener <= 2.4.4 - Authenticated (Subscriber+) Privilege Escalation via REST API '/wp/v2/users' permission_callback Overwrite
Affected software: security-hardener(Plugin)
Affected versions: ≤ 2.4.4
Authentication: Authenticated (see advisory title)
Vulnerability type: Privilege escalation
CVE: CVE-2026-16149
Published: 22 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow a lower-privilege user to perform actions reserved for administrators.
Source: Data imported from Wordfence Intelligence (advisory 64f1a71f-e210-4191-bfb4-56f8568180ed). Methodology and redistribution notes

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