Directory traversal vulnerability in Zen Cart 1.5.4 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the act parameter to ajax.php.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
16% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)