CVE-2026-4525

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

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

Vulnerability Description

If a Vault auth mount is configured to pass through the "Authorization" header, and the "Authorization" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16.

Vulnerability Details

Published Date

April 17, 2026

Last Modified

April 18, 2026

CWE ID

CWE-201

Source

NVD

Vendor

go

Product

github.com/hashicorp/vault

External References

https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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