{"id":"CVE-2020-26129","aliases":["EUVD-2020-18759","GHSA-4hv7-632m-j4jc"],"status":"published","title":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","description":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0077,"percentile":0.55888,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-444"],"published":"2020-11-16T15:09:55Z","modified":"2026-10-24T10:30:35Z","products":[{"vendor":"jetbrains","product":"ktor"}],"references":[{"url":"https://blog.jetbrains.com","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://blog.jetbrains.com/2020/11/16/jetbrains-security-bulletin-q3-2020/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26129"},{"url":"https://github.com/advisories/GHSA-4hv7-632m-j4jc"}],"sources":{"cve":[{"id":"CVE-2020-26129","description":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","status":"published","published":"2020-11-16T15:09:55Z","modified":"2024-08-04T15:49:07.152Z","updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-18759","description":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","status":"published","published":"2020-11-16T15:09:55Z","modified":"2024-08-04T15:49:07Z","updated_at":"2026-11-03T03:07:15.778249Z"}],"ghsa":[{"id":"GHSA-4hv7-632m-j4jc","title":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","description":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","status":"published","published":"2022-05-24T17:34:16Z","modified":"2023-01-29T05:04:29Z","cwes":["CWE-444"],"updated_at":"2026-11-02T14:45:34.167575Z"}],"nvd":[{"id":"CVE-2020-26129","description":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","status":"published","published":"2020-11-16T16:15:14.773Z","modified":"2026-06-17T03:07:38.527Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:06:24.137599Z"}],"osv":[{"id":"CVE-2020-26129","description":"In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.","status":"published","published":"2020-11-16T16:15:14.773Z","modified":"2026-10-24T10:30:35.029607912Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:15.879068Z"}]}}