CVE-2026-73532 Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build
Attackers can execute code and gain admin access via a tampered plugin build containing a backdoor, affecting Fluent Forms Pro users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73532?
CVE-2026-73532 is a critical vulnerability in WPManageNinja Fluent Forms Pro, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-506
Which versions are affected by CVE-2026-73532?
How do I fix CVE-2026-73532?
No fix has been published for CVE-2026-73532 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73532 being exploited?
There is no known exploitation of CVE-2026-73532 in the wild and no public exploit code.
Sources
Also known as GHSA-f3v6-4mcw-wrqj.