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Description

Vault and Vault Enterprise (“Vault”) TLS certificate auth method did not correctly validate client certificates when configured with a non-CA certificate as [+trusted certificate+|https://developer.hashicorp.com/vault/api-docs/auth/cert#certificate]. In this configuration, an attacker may be able to craft a malicious certificate that could be used to impersonate another user. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.

PUBLISHED Reserved 2025-06-12 | Published 2025-08-01 | Updated 2026-02-26 | Assigner HashiCorp




MEDIUM: 6.8CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-295: Improper Certificate Validation

Product status

Default status
unaffected

Any version before 1.20.1
affected

Default status
unaffected

Any version before 1.20.1
affected

References

discuss.hashicorp.com/...-name-for-non-ca-certificates/76037

cve.org (CVE-2025-6037)

nvd.nist.gov (CVE-2025-6037)

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