{"id":"CVE-2020-5420","aliases":["EUVD-2020-26589","GHSA-jf63-p3cp-7qf7"],"status":"published","title":"Gorouter is vulnerable to DoS attack via invalid HTTP responses","description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","severity":{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01183,"percentile":0.6803,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2020-09-03T01:10:16Z","modified":"2026-10-24T10:30:26Z","products":[{"vendor":"cloud foundry","product":"cf deployment"},{"vendor":"cloud foundry","product":"routing"},{"vendor":"cloudfoundry","product":"cf-deployment"},{"vendor":"cloudfoundry","product":"gorouter"},{"vendor":"cloudfoundry foundation","product":"cf deployment"}],"references":[{"url":"https://www.cloudfoundry.org/blog/cve-2020-5420","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5420"},{"url":"https://github.com/advisories/GHSA-jf63-p3cp-7qf7"}],"sources":{"cve":[{"id":"CVE-2020-5420","title":"Gorouter is vulnerable to DoS attack via invalid HTTP responses","description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","status":"published","published":"2020-09-03T01:10:16.091Z","modified":"2024-09-17T02:06:44.11Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-26589","description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","status":"published","published":"2020-09-03T01:10:16Z","modified":"2024-09-17T02:06:44Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:43.354671Z"}],"ghsa":[{"id":"GHSA-jf63-p3cp-7qf7","title":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf...","description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","status":"published","published":"2022-05-24T17:27:23Z","modified":"2023-01-29T05:04:22Z","updated_at":"2026-11-02T14:45:32.201087Z"}],"nvd":[{"id":"CVE-2020-5420","description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","status":"published","published":"2020-09-03T01:15:10.857Z","modified":"2026-06-17T03:21:27.693Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:06:13.600965Z"}],"osv":[{"id":"CVE-2020-5420","description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","status":"published","published":"2020-09-03T01:15:10.857Z","modified":"2026-10-24T10:30:26.143297064Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"}]}}