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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
HashiCorp Vault
Default version status: unaffected
0.11.2 to < 2.0.0affected
HashiCorp Vault Enterprise
Default version status: unaffected
0.11.2 to < 2.0.0affected
References
- https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344 ↗
- https://access.redhat.com/security/cve/CVE-2026-4525 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2459107 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4525.json ↗