CVE-2026-5807: Hashicorp Vault

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.

Affected products

• Hashicorp Vault: before 2.0.0 (fixed in 2.0.0)

Published 2026-04-17. Last modified 2026-07-15.