Patchstack AdvisoryThird-party advisory
https://patchstack.com/database/wordpress/plugin/fluentformpro/vulnerability/wordpress-fluent-forms-pro-add-on-pack-plugin-6-2-7-6-2-7-remote-code-execution-vulnerability CVE-2026-73532
CRITICAL
Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build
Record summary
CVE-2026-73532 has a selected CVSS score of 9.3 (critical).
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.
Description source: CVE List
Exploitation context
Known exploitation
- VulnCheck KEV
- Listed · Aug 1, 2026 · VulnCheck
- Reported exploitation
- Observed · VulnCheck
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Fluent Forms ProBrowse WPManageNinja / Fluent Forms ProDefault status: affected | CVE List | 6.2.7 | affected |
References
4WP Plugin Pageproduct
https://wordpress.org/plugins/fluentform WPManageNinja Security IncidentTechnical description
https://wpmanageninja.com/security-incident-on-31-july-2026 vulncheck.comThird-party advisory
https://www.vulncheck.com/advisories/fluent-forms-pro-embedded-malicious-code-via-tampered-plugin-build