CVE-2025-4166

Published: May 2, 2025

Modified: May 8, 2025

PUBLISHED

CVSS v3.1

4.5

MEDIUM

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.

Vendor	Product	Versions
HashiCorp	Vault	affected `0.3.0 - < 1.19.2`
HashiCorp	Vault Enterprise	affected `0.10.0 - < 1.19.2`

Weaknesses (CWE)

CWE-209

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

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

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CVE-2025-4166

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References