{"id":"CVE-2026-63329","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63329","generatedAt":"2026-10-28T03:31:46.245Z","title":"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.","description":"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.","published":"2026-09-21T19:17:08.000Z","lastModified":"2026-09-24T21:25:27.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-116","CWE-290"],"affected":[],"epss":{"score":0.00308,"percentile":0.23425,"date":"2026-10-26","history":[{"date":"2026-09-22","score":0.00243,"percentile":0.15814}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-21T19:17:08.000Z","detail":{"score":"4.9","severity":"MEDIUM","publishedAt":"2026-09-21T19:17:08.290Z"},"summary":"New CVE, medium severity (CVSS 4.9)."}],"references":[{"url":"https://github.com/warp-tech/warpgate/commit/c3748d7585209781b2d3a39ac9941b91d11d9b77","source":"security-advisories@github.com"},{"url":"https://github.com/warp-tech/warpgate/releases/tag/v0.25.6","source":"security-advisories@github.com"},{"url":"https://github.com/warp-tech/warpgate/security/advisories/GHSA-862h-v6cc-9757","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63329","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}