CVE-2025-4166

4.5 MEDIUM

Published: May 02, 2025 Modified: December 31, 2025

Description

Vault Community and Vault Enterprise Key/Value (kv) Version 2 plugin may unintentionally expose sensitive information in server and audit logs when users submit malformed payloads during secret creation or update operations via the Vault REST API. This vulnerability, identified as CVE-2025-4166, is fixed in Vault Community 1.19.3 and Vault Enterprise 1.19.3, 1.18.9, 1.17.16, 1.16.20.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://discuss.hashicorp.com/t/hcsec-2025-09-vault-may-expose-sensitive-information-in-error-logs-when-processing-malformed-data-with-the-kv-v2-plugin

Source: security@hashicorp.com

Vendor Advisory

1 reference(s) from NVD

Quick Stats

CVSS v3 Score

4.5 / 10.0

EPSS (Exploit Probability)

0.0%

3th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-209

Affected Vendors

openbao hashicorp

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