{"id":"CVE-2021-25763","aliases":["EUVD-2021-12646","GHSA-7m4m-xwpv-qmvh"],"status":"published","title":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00548,"percentile":0.46341,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327"],"published":"2021-02-03T15:22:06Z","modified":"2026-10-24T10:30:50Z","products":[{"vendor":"jetbrains","product":"ktor"}],"references":[{"url":"https://blog.jetbrains.com","tags":["x_refsource_MISC","x_transferred","Product","article"]},{"url":"https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25763"},{"url":"https://github.com/advisories/GHSA-7m4m-xwpv-qmvh"}],"sources":{"cve":[{"id":"CVE-2021-25763","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","status":"published","published":"2021-02-03T15:22:06Z","modified":"2024-08-03T20:11:27.971Z","updated_at":"2026-11-02T14:32:59.430294Z"}],"euvd":[{"id":"EUVD-2021-12646","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","status":"published","published":"2021-02-03T15:22:06Z","modified":"2024-08-03T20:11:27Z","updated_at":"2026-11-03T03:24:52.420769Z"}],"ghsa":[{"id":"GHSA-7m4m-xwpv-qmvh","title":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","status":"published","published":"2022-05-24T17:40:51Z","modified":"2023-01-29T05:06:21Z","cwes":["CWE-327"],"updated_at":"2026-11-02T14:46:00.036476Z"}],"nvd":[{"id":"CVE-2021-25763","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","status":"published","published":"2021-02-03T16:15:14.773Z","modified":"2026-06-17T03:42:24.897Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:06:49.660551Z"}],"osv":[{"id":"CVE-2021-25763","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","status":"published","published":"2021-02-03T16:15:14.773Z","modified":"2026-10-24T10:30:50.272893807Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.778776Z"}]}}