Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-4525

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
17/04/2026
Last modified:
27/04/2026

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* 0.11.2 (including) 1.19.16 (excluding)
cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:* 0.11.2 (including) 2.0.0 (excluding)
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* 1.20.0 (including) 1.20.10 (excluding)
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* 1.21.0 (including) 1.21.5 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools