{"id":"CVE-2020-26161","aliases":["EUVD-2020-18786","GHSA-6ccf-f672-cpvv"],"status":"published","title":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a...","description":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01073,"percentile":0.65191,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2020-10-26T17:29:39Z","modified":"2026-06-17T03:07:44Z","products":[{"vendor":"octopus","product":"octopus_deploy"}],"references":[{"url":"https://github.com/OctopusDeploy","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/OctopusDeploy/Issues/issues/6622","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://github.com/OctopusDeploy/Issues/issues/6627","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26161"},{"url":"https://github.com/advisories/GHSA-6ccf-f672-cpvv"}],"sources":{"cve":[{"id":"CVE-2020-26161","description":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.","status":"published","published":"2020-10-26T17:29:39Z","modified":"2024-08-04T15:49:07.156Z","updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-18786","description":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.","status":"published","published":"2020-10-26T17:29:39Z","modified":"2024-08-04T15:49:07Z","updated_at":"2026-11-03T03:07:15.778249Z"}],"ghsa":[{"id":"GHSA-6ccf-f672-cpvv","title":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a...","description":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.","status":"published","published":"2022-05-24T17:32:10Z","modified":"2023-01-29T05:04:16Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:45:30.813688Z"}],"nvd":[{"id":"CVE-2020-26161","description":"In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.","status":"published","published":"2020-10-26T18:15:14.667Z","modified":"2026-06-17T03:07:44.023Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:06:20.704992Z"}]}}