CVE-2025-4166 — Vault May Include Sensitive Data in Error Logs When Using the KV v2 Plugin

CVE-2025-4166

Vault May Include Sensitive Data in Error Logs When Using the KV v2 Plugin PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
HashiCorp / Vault	affected 0.3.0 before 1.19.2
HashiCorp / Vault Enterprise	affected 0.10.0 before 1.19.2

CWE

CWE-209

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.