CVE-2026-73532
CRITICALDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 38% of all known CVEs.
References
Related Vulnerabilities
Other CWE-506 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-3094 | Critical | 10.0 | 86% | - | Fix |
| CVE-2025-30066 | High | 8.6 | 70% | KEV | - |
| CVE-2026-33634 | High | 8.8 | 59% | KEV | Fix |
| CVE-2024-4978 | High | 8.4 | 27% | KEV | - |
| CVE-2025-54313 | High | 7.5 | 4.1% | KEV | Fix |
| CVE-2025-30154 | High | 8.6 | 2.4% | KEV | Fix |
Common questions
How do I fix CVE-2026-73532?
No published fix for CVE-2026-73532 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-73532 being actively exploited?
Not that we know of. CVE-2026-73532 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.
How severe is CVE-2026-73532?
CVE-2026-73532 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-14.