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VULNERABILITIES

CVE-2026-4525 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA: redhat-SADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/security/cve/CVE-2026-4525 redhat-SADP
https://bugzilla.redhat.com/show_bug.cgi?id=2459107 redhat-SADP
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4525.json redhat-SADP
https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-201Insertion of Sensitive Information Into Sent Dataredhat-SADP
CWE-201Insertion of Sensitive Information Into Sent Data[email protected]

Affected Products

ProductVersions
hashicorp vault
>= 0.11.2, < 1.19.16
>= 0.11.2, < 2.0.0
>= 1.20.0, < 1.20.10
>= 1.21.0, < 1.21.5

CPE

  • cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*
  • cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-4525
NVD Published Date:
Apr 17, 2026
NVD Last Modified:
Jul 15, 2026
Source:
[email protected]