CVE-2019-11879: Ruby-Lang Webrick

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory. NOTE: The vendor states that this is analogous to Options FollowSymlinks in the Apache HTTP Server, and therefore it is "not a problem.

Affected products

• Ruby-Lang Webrick: version 1.4.2 only

Published 2019-05-10. Last modified 2026-06-17.