CVE-2026-91163: low-severity vulnerability in warp-tech warpgate
Warpgate: Kubernetes listener discloses internal error text to an unauthenticated caller
Published
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.7epss 0.2%
Warpgate is an open source SSH, HTTPS, and MySQL bastion host for Linux. Prior to 0.29.0, the Kubernetes protocol listener uses AcceptAnyClientCert in warpgate-protocol-kubernetes/src/server/client_certs.rs to accept certificates at the TLS layer and defer validation to warpgate-protocol-kubernetes/src/server/auth.rs, where authentication and lookup failures are rendered verbatim in an HTTP 500 response body. The Kubernetes application in warpgate-protocol-kubernetes/src/server/mod.rs lacks the outer request-logging wrapper used by the HTTP protocol, and failures in warpgate-protocol-kubernetes/src/server/handlers.rs can short-circuit before its inner log point. An unauthenticated network client can therefore induce failures and receive ASN.1/DER parser diagnostics or sea_orm database errors without the attempt being recorded in the gateway log. The disclosed information is limited to internal diagnostics, and no user-data, integrity, or availability impact is established. This issue is fixed in version 0.29.0.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
warp-tech · warpgateRelated CVEs — warp-tech warpgate
In the same product, most dangerous first.
CVE-2023-48712HIGHUser authorization bug leading to privilege escalation in warpgateEPSS 0.7%CVE-2023-37268MEDIUMUser login confusion with SSO in warpgateEPSS 0.5%CVE-2026-63330HIGHWarpgate: Missing Admin Authorization on Live Recording Stream WebSocket Allows Any Authenticated User to Eavesdrop on Terminal SessionsEPSS 0.5%CVE-2026-58491CRITICALWarpgate: Reflected XSS in SSO return endpoint via attacker-controlled next parameterEPSS 0.5%CVE-2026-91164MEDIUMWarpgate: API tokens bypass the user's allowed_ip_ranges restrictionEPSS 0.4%CVE-2026-91167MEDIUMWarpgate: Missing authorization check on `PUT /users/:id/roles/:role_id` allows any admin to bypass the `AccessRolesAssign` permission boundaryEPSS 0.4%