Advisoriesby IbisVaultGHSA-mwgr-84fv-3jh9
Hashicorp Vault has an Observable Discrepancy on Existing and Non-Existing Users
Fix: upgrade to 1.20.1 or later
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
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