CVE-2020-5640: Onethird

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Local file inclusion vulnerability in OneThird CMS v1.96c and earlier allows a remote unauthenticated attacker to execute arbitrary code or obtain sensitive information via unspecified vectors.

Affected products

• Onethird Onethird: up to and including 1.96c

Published 2020-10-20. Last modified 2026-06-17.