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CVE-2026-73532 is a vulnerability classified as Embedded Malicious Code, affecting Fluent Forms Pro (affected versions: 6.2.7). This vulnerability is rated Critical, with a CVSS score of 9.3. Current sources do not report this vulnerability as exploited.
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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.
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