CVE-2021-45042: Hashicorp Vault

Medium severity, CVSS 4.9. EPSS: 1.5% chance of exploitation in the next 30 days.

In HashiCorp Vault and Vault Enterprise before 1.7.7, 1.8.x before 1.8.6, and 1.9.x before 1.9.1, clusters using the Integrated Storage backend allowed an authenticated user (with write permissions to a kv secrets engine) to cause a panic and denial of service of the storage backend. The earliest affected version is 1.4.0.

Affected products

• Hashicorp Vault: from 1.4.0, before 1.7.7 (fixed in 1.7.7); from 1.8.0, before 1.8.6 (fixed in 1.8.6); version 1.9.0 only

Published 2021-12-17. Last modified 2026-06-17.