Vulnerability intelligence

CVE-2026-67399

Deserialization of untrusted data in WHMCS 9.0.0 before 9.0.8 and 8.0.0 before 8.13.7 allows remote attackers to execute arbitrary code.

CVSS Score

—

Critical

EPSS — Exploit Probability

0.8%

Riskier than 54% of all CVEs · checked 2026-10-16

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Vendor fix published

2 articles across 1 outlet · first covered Sep 4, 2026 · latest Sep 16, 2026

Coverage timeline