VaultGHSA-mwgr-84fv-3jh9
Hashicorp Vault has an Observable Discrepancy on Existing and Non-Existing Users
Low3.7CVE-2025-6011 · Published Aug 1, 2025 · updated Sep 10, 2026
A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. 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:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-203
- Also known as
- BIT-vault-2025-6011, CVE-2025-6011, GO-2025-3839
More Vault advisories
All Vault| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 12025 | Hashicorp Vault has Incorrect Validation for Non-CA Certificates Medium6.8Aug 1, 2025 | Medium6.8 | 1.20.1 |
| Aug 12025 | Hashicorp Vault has Privilege Escalation VulnerabilityHigh7.2Aug 1, 2025 | High7.2 | 1.20.0 |
| Aug 12025 | Hashicorp Vault has Code Execution Vulnerability via Plugin ConfigurationCritical9.1Aug 1, 2025 | Critical9.1 | 1.20.1 |
| Aug 12025 | Hashicorp Vault has Lockout Feature Authentication BypassMedium5.3Aug 1, 2025 | Medium5.3 | 1.20.1 |
| Aug 12025 | Hashicorp Vault's TOTP Secrets Engine Susceptible to Code ReuseMedium6.5Aug 1, 2025 | Medium6.5 | 1.20.1 |
| Aug 12025 | Hashicorp Vault has Login MFA Rate Limit Bypass VulnerabilityMedium5.7Aug 1, 2025 | Medium5.7 | 1.20.1 |