{"id":"CVE-2020-7956","aliases":["EUVD-2021-1046","GHSA-cj2h-ww36-v932","GO-2022-0821","UBUNTU-CVE-2020-7956"],"status":"published","title":"Improper Certificate Validation in HashiCorp Nomad","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","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":"2026-11-09","score":0.00983,"percentile":0.62566,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2020-01-31T12:43:52Z","modified":"2026-10-20T10:53:30Z","fixes":[{"ecosystem":"Go","package":"github.com/hashicorp/nomad","fixed_in":["0.10.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/hashicorp/nomad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/nomad","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.10.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/nomad","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.10.3"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"nomad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"nomad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.7+dfsg1-1ubuntu1"]}],"products":[{"vendor":"hashicorp","product":"nomad"}],"references":[{"url":"https://www.hashicorp.com/blog/category/nomad/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://github.com/hashicorp/nomad/issues/7003","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7956","tags":["advisory"]},{"url":"https://github.com/hashicorp/nomad/pull/7023","tags":["web","fix"]},{"url":"https://github.com/advisories/GHSA-cj2h-ww36-v932","tags":["advisory"]},{"url":"https://www.hashicorp.com/blog/category/nomad","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-7956","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-7956","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-7956","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2020-01-31T12:43:52Z","modified":"2024-08-04T09:48:24.592Z","updated_at":"2026-11-02T14:35:58.331892Z"}],"euvd":[{"id":"EUVD-2021-1046","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2020-01-31T12:43:52Z","modified":"2024-08-04T09:48:24Z","updated_at":"2026-11-03T03:07:58.506831Z"}],"ghsa":[{"id":"GHSA-cj2h-ww36-v932","title":"Improper Certificate Validation in HashiCorp Nomad","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2021-05-18T18:20:26Z","modified":"2023-01-09T05:05:11Z","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"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:36:11.367194Z"}],"nvd":[{"id":"CVE-2020-7956","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2020-01-31T13:15:10.877Z","modified":"2026-06-17T03:25:41.73Z","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-295"],"updated_at":"2026-11-02T14:05:53.837808Z"}],"osv":[{"id":"CVE-2020-7956","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2020-01-31T13:15:10.877Z","modified":"2026-10-20T10:53:30.918577239Z","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"}],"updated_at":"2026-11-02T15:44:17.34531Z"},{"id":"GHSA-cj2h-ww36-v932","title":"Improper Certificate Validation in HashiCorp Nomad","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2021-05-18T18:20:26Z","modified":"2024-08-21T15:58:55.941207Z","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"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:46:45.28161Z"},{"id":"UBUNTU-CVE-2020-7956","description":"HashiCorp Nomad and Nomad Enterprise up to 0.10.2 incorrectly validated role/region associated with TLS certificates used for mTLS RPC, and were susceptible to privilege escalation. Fixed in 0.10.3.","status":"published","published":"2020-01-31T13:15:00Z","modified":"2025-10-24T04:48:19Z","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"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"GO-2022-0821","title":"Improper Certificate Validation in HashiCorp Nomad in github.com/hashicorp/nomad","description":"Improper Certificate Validation in HashiCorp Nomad in github.com/hashicorp/nomad","status":"published","published":"2024-08-21T15:29:02Z","modified":"2026-03-03T04:50:56.929176Z","updated_at":"2026-11-02T15:47:00.918515Z"}]}}