{"id":"CVE-2025-49015","aliases":["EUVD-2025-18625","GHSA-px2c-r924-mwcc"],"status":"published","title":"Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates","description":"The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.0023,"percentile":0.13896,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-297"],"published":"2025-06-18T00:00:00Z","modified":"2026-10-19T21:00:05Z","fixes":[{"ecosystem":"NuGet","package":"CouchbaseNetClient","fixed_in":["3.7.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"CouchbaseNetClient","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1"}]}]},{"source":"osv","ecosystem":"NuGet","package":"CouchbaseNetClient","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1"}]}],"versions":["0.9.0","0.9.1","0.9.2","1.0.0","1.0.1","1.1.0","1.1.0.1","1.1.1","1.1.2","1.1.3","1.1.4","1.1.5","1.1.6","1.2.0","1.2.0-beta","1.2.0-beta-2","1.2.0-beta-3","1.2.1","1.2.2","1.2.2.1","1.2.3","1.2.4","1.2.5","1.2.6","1.2.7","1.2.8","1.2.9","1.3.0","1.3.1","1.3.10","1.3.11","1.3.12","1.3.13","1.3.2","1.3.3","1.3.4","1.3.5","1.3.6","1.3.7","1.3.8","1.3.9","2.0.0","2.0.0-beta","2.0.0-beta2","2.0.0.1","2.0.1","2.0.2","2.0.3","2.0.3.1","2.0.3.2","2.1.0","2.1.1","2.1.2","2.1.3","2.1.4","2.2.0","2.2.0-dp1","2.2.1","2.2.2","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.3.0","2.3.1","2.3.10","2.3.11","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.3.8","2.3.9","2.4.0","2.4.0-dp1","2.4.0-dp2","2.4.0-dp3","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7","2.4.8","2.5.0","2.5.1","2.5.10","2.5.11","2.5.12","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.0-beta","2.6.0-dp1","2.6.1","2.6.2","2.7.0","2.7.1","2.7.10","2.7.11","2.7.12","2.7.13","2.7.14","2.7.15","2.7.16","2.7.17","2.7.18","2.7.19","2.7.2","2.7.20","2.7.21","2.7.22","2.7.23","2.7.24","2.7.25","2.7.26","2.7.27","2.7.3","2.7.4","2.7.5","2.7.6","2.7.7","2.7.8","2.7.9","3.0.0","3.0.0-alpha1","3.0.0-alpha2","3.0.0-alpha3","3.0.0-alpha4","3.0.0-alpha5","3.0.0-beta1","3.0.0-beta2","3.0.0-beta3","3.0.0-beta4","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.5-donotuse-202105042202","3.1.5-donotuse-20210504335","3.1.5-local-202105032202","3.1.6","3.1.7","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.3.0","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.4.0","3.4.1","3.4.10","3.4.11","3.4.12","3.4.13","3.4.14","3.4.14-rc3","3.4.15","3.4.2","3.4.3","3.4.4","3.4.5","3.4.6","3.4.7","3.4.8","3.4.9","3.5.0","3.5.1","3.5.1-rc5","3.5.2","3.5.3","3.5.5","3.6.0","3.6.1","3.6.2","3.6.3","3.6.4","3.6.5","3.6.5-buildbot-r8718","3.6.6","3.7.0"]}],"products":[{"vendor":"couchbase","product":".net_sdk"}],"references":[{"url":"https://forums.couchbase.com/tags/security","tags":["Issue Tracking","web"]},{"url":"https://docs.couchbase.com/server/current/release-notes/relnotes.html","tags":["Release Notes","web"]},{"url":"https://www.couchbase.com/alerts/","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49015","tags":["advisory"]},{"url":"https://www.couchbase.com/alerts","tags":["web"]},{"url":"https://github.com/couchbase/couchbase-net-client/commit/04d1679b2178f922036be6e595b3d91f972c5ba3","tags":["web"]},{"url":"https://github.com/advisories/GHSA-px2c-r924-mwcc"},{"url":"https://github.com/couchbase/couchbase-net-client","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-49015","description":"The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.","status":"published","published":"2025-06-18T00:00:00Z","modified":"2025-06-18T14:47:35.181Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-297"],"updated_at":"2026-11-02T14:32:24.825718Z"}],"euvd":[{"id":"EUVD-2025-18625","description":"The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.","status":"published","published":"2025-06-18T00:00:00Z","modified":"2025-06-18T14:47:35Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:32:20.01453Z"}],"ghsa":[{"id":"GHSA-px2c-r924-mwcc","title":"Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates","description":"The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.","status":"published","published":"2025-06-18T15:31:15Z","modified":"2026-10-19T20:55:13Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-297"],"updated_at":"2026-11-02T14:41:33.669646Z"}],"nvd":[{"id":"CVE-2025-49015","description":"The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.","status":"published","published":"2025-06-18T14:15:44.87Z","modified":"2026-06-17T09:30:40.673Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-297"],"updated_at":"2026-11-02T14:11:13.247441Z"}],"osv":[{"id":"GHSA-px2c-r924-mwcc","title":"Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates","description":"The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.","status":"published","published":"2025-06-18T15:31:15Z","modified":"2026-10-19T21:00:05.206656943Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-297"],"updated_at":"2026-11-02T15:46:53.700556Z"}]}}