CVE-2026-49342: Lsegal Yard

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

YARD is a documentation generation tool for the Ruby programming language. Prior to version 0.9.44, YARD's static cache lookup reads a request path before the router's path cleanup runs. When a server is configured with a document root, a traversal path such as `/../yard-cache-secret.html` is joined against that root and can return a readable sibling `.html` file outside the intended static tree. Version 0.9.44 patches the issue.

Affected products

• Lsegal Yard: before 0.9.44 (fixed in 0.9.44)

Published 2026-06-19. Last modified 2026-06-23.