Description
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.
Published: 2025-08-01
Score: 3.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-23395 Hashicorp Vault has an Observable Discrepancy on Existing and Non-Existing Users
Github GHSA Github GHSA GHSA-mwgr-84fv-3jh9 Hashicorp Vault has an Observable Discrepancy on Existing and Non-Existing Users
History

Wed, 13 Aug 2025 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:hashicorp:vault:1.20.0:*:*:*:enterprise:*:*:*

Mon, 04 Aug 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Low


Mon, 04 Aug 2025 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Hashicorp
Hashicorp vault
Hashicorp vault Enterprise
Vendors & Products Hashicorp
Hashicorp vault
Hashicorp vault Enterprise

Fri, 01 Aug 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 01 Aug 2025 18:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Timing Side-Channel in Vault’s Userpass Auth Method
Weaknesses CWE-203
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Subscriptions

Hashicorp Vault Vault Enterprise
cve-icon MITRE

Status: PUBLISHED

Assigner: HashiCorp

Published:

Updated: 2025-08-01T19:06:58.251Z

Reserved: 2025-06-11T18:57:02.577Z

Link: CVE-2025-6011

cve-icon Vulnrichment

Updated: 2025-08-01T19:06:49.033Z

cve-icon NVD

Status : Analyzed

Published: 2025-08-01T18:15:56.713

Modified: 2025-08-13T18:10:13.237

Link: CVE-2025-6011

cve-icon Redhat

Severity : Low

Publid Date: 2025-08-01T18:00:24Z

Links: CVE-2025-6011 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-08-04T08:58:51Z

Weaknesses