1. Home
  2. CVE Database
  3. CVE-2026-4525
HIGH · 7.5

CVE-2026-4525

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 back...

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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
HashicorpVault>= 0.11.2, < 1.19.16

Related Weaknesses (CWE)

CWE-201

References

FAQ

What is CVE-2026-4525?

CVE-2026-4525 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 back...

How severe is CVE-2026-4525?

CVE-2026-4525 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4525?

Check the references section above for vendor advisories and patch information. Affected products include: Hashicorp Vault.