SecuriTricks - CVE-2025-4166

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.

Product(s) Impacted

Vendor	Product	Versions
Hashicorp	Vault	1.19.3, <1.19.3, 1.18.9, 1.17.16, 1.16.20

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-209

Generation of Error Message Containing Sensitive Information

The product generates an error message that includes sensitive information about its environment, users, or associated data.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	hashicorp	vault	1.19.3	/	/	/	/	/	/	/
a	hashicorp	vault	<1.19.3	/	/	/	/	/	/	/
a	hashicorp	vault	1.18.9	/	/	/	/	/	/	/
a	hashicorp	vault	1.17.16	/	/	/	/	/	/	/
a	hashicorp	vault	1.16.20	/	/	/	/	/	/	/

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

CVSS Score

4.5 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: HIGH
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: NONE
Availability Impact: NONE

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

View Vector String

Timeline

Published: May 2, 2025, 3:15 p.m.
Last Modified: May 2, 2025, 3:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security@hashicorp.com

CVE-2025-4166