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Security Advisories

CVE-2025-4166

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-4166

Severity

6.5

Medium

CVSS V3

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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.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2025-4166
  • https://github.com/advisories/GHSA-gcqf-f89c-68hv
  • https://pkg.go.dev/vuln/GO-2025-3663
  • 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

Affected packages

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