{"affected":[{"product":"warpgate","source":"CNA: GitHub_M","vendor":"warp-tech","versions":[{"status":"affected","version":"< 0.29.0"}]}],"cveId":"CVE-2026-91163","cwes":["CWE-209","CWE-532"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":3.7,"severity":"low","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},{"score":3.7,"severity":"low","source":"NVD: security-advisories@github.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}],"modifiedAt":1793809074847,"publishedAt":1793805555511,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/warp-tech/warpgate/pull/2547"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/warp-tech/warpgate/releases/tag/v0.29.0"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/warp-tech/warpgate/pull/2547"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/warp-tech/warpgate/releases/tag/v0.29.0"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64"}],"remediation":[],"revision":"6702937b27fd2e211eefea021978d417cc441b0236daf6418c13b1ba88a57f2c","sources":[{"modifiedAt":1793805555511,"name":"CNA: GitHub_M","retrievedAt":1793808714395,"url":"https://www.cve.org/CVERecord?id=CVE-2026-91163"},{"modifiedAt":1793809074847,"name":"NVD","retrievedAt":1793816718709,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91163"}],"ssvc":null,"status":"published","title":"Warpgate: Kubernetes listener discloses internal error text to an unauthenticated caller","updatedAt":1793816718709}