{"id":"CVE-2020-5423","aliases":["EUVD-2020-26591","GHSA-jj4c-53qh-fp5v"],"status":"published","title":"Cloud Controller is vulnerable to denial of service via YAML parsing","description":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01145,"percentile":0.66963,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2020-12-02T01:55:11Z","modified":"2026-10-24T10:31:02Z","products":[{"vendor":"cloud foundry","product":"capi"},{"vendor":"cloud foundry","product":"cf deployment"},{"vendor":"cloudfoundry","product":"capi-release"},{"vendor":"cloudfoundry","product":"cf-deployment"},{"vendor":"cloudfoundry foundation","product":"cf deployment"}],"references":[{"url":"https://www.cloudfoundry.org/blog/cve-2020-5423","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5423"},{"url":"https://github.com/advisories/GHSA-jj4c-53qh-fp5v"}],"sources":{"cve":[{"id":"CVE-2020-5423","title":"Cloud Controller is vulnerable to denial of service via YAML parsing","description":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.","status":"published","published":"2020-12-02T01:55:11.878Z","modified":"2024-09-17T03:43:03.193Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:47.56691Z"}],"euvd":[{"id":"EUVD-2020-26591","description":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.","status":"published","published":"2020-12-02T01:55:11Z","modified":"2024-09-17T03:43:03Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:29.460274Z"}],"ghsa":[{"id":"GHSA-jj4c-53qh-fp5v","title":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in...","description":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.","status":"published","published":"2022-05-24T17:35:20Z","modified":"2023-01-29T05:05:30Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:45:48.396935Z"}],"nvd":[{"id":"CVE-2020-5423","description":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.","status":"published","published":"2020-12-02T02:15:12.033Z","modified":"2026-06-17T03:21:28.2Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:06:25.394006Z"}],"osv":[{"id":"CVE-2020-5423","description":"CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.","status":"published","published":"2020-12-02T02:15:12.033Z","modified":"2026-10-24T10:31:02.322165664Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"}]}}