{"id":"CVE-2021-43185","aliases":["EUVD-2021-30129","GHSA-vv73-h85j-cqvw"],"status":"published","title":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","description":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02008,"percentile":0.81107,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74"],"published":"2021-11-09T14:32:04Z","modified":"2026-06-17T04:10:36Z","products":[{"vendor":"jetbrains","product":"youtrack"}],"references":[{"url":"https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43185"},{"url":"https://github.com/advisories/GHSA-vv73-h85j-cqvw"}],"sources":{"cve":[{"id":"CVE-2021-43185","description":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","status":"published","published":"2021-11-09T14:32:04Z","modified":"2024-08-04T03:47:13.604Z","updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30129","description":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","status":"published","published":"2021-11-09T14:32:04Z","modified":"2024-08-04T03:47:13Z","updated_at":"2026-11-03T03:24:14.796505Z"}],"ghsa":[{"id":"GHSA-vv73-h85j-cqvw","title":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","description":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","status":"published","published":"2022-05-24T19:20:07Z","modified":"2023-01-30T05:03:32Z","cwes":["CWE-74"],"updated_at":"2026-11-02T14:46:51.429276Z"}],"nvd":[{"id":"CVE-2021-43185","description":"JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.","status":"published","published":"2021-11-09T15:15:08.987Z","modified":"2026-06-17T04:10:36.127Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}