What’s Vulnerable › Vulnerabilities
CVE-2025-6037: Vault Certificate Auth Method Did Not Validate Common Name For Non-CA Certificates
- Severity: medium (CVSS 6.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-08-01 · updated 2026-06-17
- Weakness: CWE-295
Description
Vault and Vault Enterprise (“Vault”) TLS certificate auth method did not correctly validate client certificates when configured with a non-CA certificate as [+trusted certificate+|https://developer.hashicorp.com/vault/api-docs/auth/cert#certificate]. In this configuration, an attacker may be able to craft a malicious certificate that could be used to impersonate another user. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.
Affected products
- HashiCorp Vault: before 1.16.23; before 1.20.1; from 1.17.0 before 1.18.12; from 1.19.0 before 1.19.7; 1.20.0 — fixed in 1.16.23, 1.18.12, 1.19.7, 1.20.1
How to fix
Upgrade to a fixed version: HashiCorp Vault 1.16.23, 1.18.12, 1.19.7, 1.20.1. Check the vendor advisory for mitigations.
References
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