CVE-2026-4525
HIGH7.5EPSS 0.03%Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header
Published: 4/17/2026Modified: 4/28/2026
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.
Affected packages (2)
- Bitnami/vault>= 0.10.0, < 2.0.0
- Go/github.com/hashicorp/vault>= 0.11.2, <= 1.21.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |