CVE-2026-73532Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build
Updated under an hour ago ()
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It affects WPManageNinja Fluent Forms Pro. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-506
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
WPManageNinja Fluent Forms Pro wpmanageninja:fluent_forms_pro (from the name) | 6.2.7 | CNA record |
References
- https://wpmanageninja.com/security-incident-on-31-july-2026/technical-description
- https://wordpress.org/plugins/fluentform/product
- 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-vulnerabilitythird-party-advisory
- https://www.vulncheck.com/advisories/fluent-forms-pro-embedded-malicious-code-via-tampered-plugin-buildthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.