BIT-VAULT-2026-4525 Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header

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...

CVE-2026-4525 Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header

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...

PT-2026-33398

Name of the Vulnerable Software and Affected Versions HashiCorp Vault versions prior to 2.0.0 HashiCorp Vault versions prior to 1.21.5 HashiCorp Vault versions prior to 1.20.10 HashiCorp Vault versions prior to 1.19.16 Description When a Vault auth mount is configured to pass through the...