CVE-2020-8162: Debian Linux

High severity, CVSS 7.5. EPSS: 3% chance of exploitation in the next 30 days.

A client side enforcement of server side security vulnerability exists in rails < 5.2.4.2 and rails < 6.0.3.1 ActiveStorage's S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.

Affected products

• Debian Debian Linux: version 10.0 only
• Rubyonrails Rails: before 5.2.4.2 (fixed in 5.2.4.2); from 6.0.0, before 6.0.3.1 (fixed in 6.0.3.1)

Published 2020-06-19. Last modified 2026-06-17.