CVE-2020-36327: Bundler

High severity, CVSS 8.8. EPSS: 6.3% chance of exploitation in the next 30 days.

Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every "Dependency Confusion" issue in every product.

Affected products

• Bundler Bundler: from 1.16.0, before 2.2.10 (fixed in 2.2.10); from 2.2.11, up to and including 2.2.16
• Fedoraproject Fedora: version 34 only
• Microsoft Package Manager Configurations: affected versions not specified

Published 2021-04-29. Last modified 2026-10-08.