{"id":"CVE-2026-91163","title":"Warpgate: Kubernetes listener discloses internal error text to an unauthenticated caller","summary":"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 …","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-209","CWE-532"],"vendor":"warp-tech","product":"warpgate","affected":["warpgate < 0.29.0"],"published":"2026-11-04","updated":"2026-11-04","sourceUpdated":"2026-11-04T15:19:15.511Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-91163","references":[{"url":"https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64","label":"https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64"},{"url":"https://github.com/warp-tech/warpgate/pull/2547","label":"https://github.com/warp-tech/warpgate/pull/2547"},{"url":"https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523","label":"https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523"},{"url":"https://github.com/warp-tech/warpgate/releases/tag/v0.29.0","label":"https://github.com/warp-tech/warpgate/releases/tag/v0.29.0"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T21:36:00.439Z","epss":0.00172,"epssPercentile":0.0662,"slug":"CVE-2026-91163","body":"## Overview\n\nWarpgate 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.\n\n## Affected\n\n- `warpgate < 0.29.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}