CVE-2026-63329
mediumWarpgate is an open source SSH, HTTPS and MySQL bastion host for Linux.
Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.25.6, copy_server_request in warpgate-protocol-http/src/proxy.rs forwards a client-supplied x-warpgate-username header before inject_own_headers appends the authenticated username. Because the request builder preserves repeated values, a proxied backend that trusts the first x-warpgate-username value can authorize an authenticated attacker as another user. The same forwarding policy also accepts the reserved x-warpgate-authentication-type header, and warpgate-common/src/http_headers.rs does not exclude either reserved identity header. This issue is fixed in version 0.25.6.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/warp-tech/warpgate/commit/c3748d7585209781b2d3a39ac9941b91d11d9b77 security-advisories@github.com
- https://github.com/warp-tech/warpgate/releases/tag/v0.25.6 security-advisories@github.com
- https://github.com/warp-tech/warpgate/security/advisories/GHSA-862h-v6cc-9757 security-advisories@github.com