CVE-2025-6037: Github.com/hashicorp/vault Hashicorp Vault Has Incorrect Validation Vulnerability

MODERATE
Advisory Identifier: GHSA-6c5r-4wfc-3mcx
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CVSS 6.8
CWE-295
Published
Advisory Summary

CVE-2025-6037 is a MODERATE (CVSS 6.8) hashicorp vault has incorrect validation vulnerability (CWE-295: Improper Certificate Validation) affecting Github.com/hashicorp/vault libraries in the Go ecosystem. The issue involves hashicorp vault has incorrect validation for non-ca certificates. Remediation is available by upgrading affected packages to version 1.20.1.

CVE-2025-6037 at a Glance

CVE Identifier CVE-2025-6037
GHSA Identifier GHSA-6c5r-4wfc-3mcx
Severity MODERATE
CVSS v3.1 Base Score 6.8
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Github.com/hashicorp/vault
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-6037

To remediate this vulnerability, upgrade all affected Github.com/hashicorp/vault dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/hashicorp/vault fixed: 1.20.1 
Upgrade github.com/hashicorp/vault to 1.20.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/hashicorp/vault

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-6037, inspect your project dependencies for Github.com/hashicorp/vault:

inspect dependencies for github.com/hashicorp/vault

Analyze the terminal output to locate any version of Github.com/hashicorp/vault in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.20.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Github.com/hashicorp/vault, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-6037 Affected Github.com/hashicorp/vault Versions

1 component(s)
Fixed Versions:
1.20.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/hashicorp/vault
golang/github.com/hashicorp/vault
Go
< 1.20.1
1.20.1

References

NVD — CVE-2025-6037 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6037
discuss.hashicorp.com/t/hcsec-2025-18-vau... WEB
https://discuss.hashicorp.com/t/hcsec-2025-18-vault-certificate-auth-method-did-not-validate-common-name-for-non-ca-certificates/76037
Github.com/hashicorp/vault Source Repository REPOSITORY
https://github.com/hashicorp/vault

Frequently Asked Questions

What is CVE-2025-6037?
CVE-2025-6037 is a security vulnerability in Github.com/hashicorp/vault involving Hashicorp Vault has Incorrect Validation for Non-CA Certificates under CWE-295: Improper Certificate Validation.
Which Github.com/hashicorp/vault versions are affected?
Affected versions include releases prior to 1.20.1 across affected packages: github.com/hashicorp/vault.
What version fixes CVE-2025-6037?
Upgrading to 1.20.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/hashicorp/vault affected?
Yes, github.com/hashicorp/vault is affected in releases prior to 1.20.1. Upgrade your dependency to 1.20.1 or later.
What is the CVSS score of CVE-2025-6037?
CVE-2025-6037 has a CVSS v3.1 base score of 6.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2025-6037?
CVE-2025-6037 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check Go dependencies for CVE-2025-6037?
Run the dependency tree command: 'inspect dependencies for github.com/hashicorp/vault'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6c5r-4wfc-3mcx",
  "modified" : "2025-08-01T21:09:19Z",
  "published" : "2025-08-01T18:31:19Z",
  "aliases" : [ "CVE-2025-6037" ],
  "summary" : "Hashicorp Vault has Incorrect Validation for Non-CA Certificates",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/hashicorp/vault"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.20.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-6037"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.hashicorp.com/t/hcsec-2025-18-vault-certificate-auth-method-did-not-validate-common-name-for-non-ca-certificates/76037"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/hashicorp/vault"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-01T21:09:19Z",
    "nvd_published_at" : "2025-08-01T18:15:57Z"
  }
}