CVE-2024-21654: Rubygems Rubygems.org

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Rubygems.org is the Ruby community's gem hosting service. Rubygems.org users with MFA enabled would normally be protected from account takeover in the case of email account takeover. However, a workaround on the forgotten password form allows an attacker to bypass the MFA requirement and takeover the account. This vulnerability has been patched in commit 0b3272a.

Affected products

• Rubygems Rubygems.org: before 2024-01-08 (fixed in 2024-01-08)

Published 2024-01-12. Last modified 2026-06-17.