Vulnerability Description
Fluent Forms Pro 6.2.7 contains an embedded malicious code vulnerability introduced via a tampered plugin build served through a decommissioned update server. The tampered build introduced a rogue PHP file (libs/class-license-sync.php), loaded via a require_once directive added to fluentformpro.php, that established a backdoor REST API endpoint, dropped persistent PHP files in mu-plugins and uploads directories, installed a passwordless administrator account, and registered scheduled tasks that survived plugin removal.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://patchstack.com/database/wordpress/plugin/fluentformpro/vulnerability/wor
- https://wordpress.org/plugins/fluentform/
- https://wpmanageninja.com/security-incident-on-31-july-2026/
- https://www.vulncheck.com/advisories/fluent-forms-pro-embedded-malicious-code-vi
FAQ
What is CVE-2026-73532?
CVE-2026-73532 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Fluent Forms Pro 6.2.7 contains an embedded malicious code vulnerability introduced via a tampered plugin build served through a decommissioned update server. The tampered build introduced a rogue PHP...
How severe is CVE-2026-73532?
CVE-2026-73532 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-73532?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.