GHSA-72gw-fmmr-c4r4
HashiCorp Vault May Expose Tokens to Auth Plugins Due to Incorrect Header Sanitization
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/hashicorp/vault | >= 0.11.2, <= 1.21.4 | no fix listed |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-4525
- https://access.redhat.com/security/cve/CVE-2026-4525
- https://bugzilla.redhat.com/show_bug.cgi?id=2459107
- https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344
- https://github.com/advisories/GHSA-72gw-fmmr-c4r4
- https://github.com/hashicorp/vault
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4525.json