Threat intelligence

WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars <= 3.9.1 - Authenticated (Contributor+) SQL Injection

CVE-2026-57643 · wp-post-author

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

Vulnerability: WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars <= 3.9.1 - Authenticated (Contributor+) SQL Injection
Affected software: wp-post-author(Plugin)
Affected versions: ≤ 3.9.1
Authentication: Authenticated (see advisory title)
Vulnerability type: SQL injection
CVE: CVE-2026-57643
Published: 26 June 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to read or modify database contents beyond intended access.
Source: Data imported from Wordfence Intelligence (advisory 7f3b7b5e-486b-447a-af65-b58d680b9870). Methodology and redistribution notes

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