Advisoriesby IbisVaultGHSA-6c5r-4wfc-3mcx
Hashicorp Vault has Incorrect Validation for Non-CA Certificates
Fix: upgrade to 1.20.1 or later
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| github.com/hashicorp/vault Go | < 1.20.1 | 1.20.1 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-295
- Also known as
- BIT-vault-2025-6037, CVE-2025-6037, GO-2025-3836
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