{"id":"CVE-2026-63329","title":"Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux","summary":"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 t…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-116","CWE-290"],"vendor":"warp-tech","product":"warpgate","affected":["warpgate < 0.25.6"],"published":"2026-09-21","updated":"2026-09-24","sourceUpdated":"2026-09-24T21:25:27.050","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63329","references":[{"url":"https://github.com/warp-tech/warpgate/commit/c3748d7585209781b2d3a39ac9941b91d11d9b77","label":"security-advisories@github.com"},{"url":"https://github.com/warp-tech/warpgate/releases/tag/v0.25.6","label":"security-advisories@github.com"},{"url":"https://github.com/warp-tech/warpgate/security/advisories/GHSA-862h-v6cc-9757","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00308,"epssPercentile":0.20982,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-22T14:12:31.220504Z"},"ingestedAt":"2026-09-21T19:51:58.861Z","slug":"CVE-2026-63329","body":"## Overview\n\nWarpgate 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}