{"id":"CVE-2020-12758","aliases":["BIT-consul-2020-12758","DEBIAN-CVE-2020-12758","EUVD-2022-1142","GHSA-q2qr-3c2p-9235","GO-2022-0861"],"status":"published","title":"Denial of Service (DoS) in HashiCorp Consul","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01709,"percentile":0.77523,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-404"],"published":"2020-06-11T19:23:26Z","modified":"2026-10-20T10:51:06Z","fixes":[{"ecosystem":"Go","package":"github.com/hashicorp/consul","fixed_in":["1.6.6","1.7.4"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"consul","fixed_in":["1.6.6","1.7.4"],"sources":["osv"]},{"ecosystem":"Debian:11","package":"consul","fixed_in":["1.7.4+dfsg1-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.6.0-beta1"},{"fixed":"1.6.6"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.0"},{"fixed":"1.7.4"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"consul","ranges":[{"type":"SEMVER","events":[{"introduced":"1.6.0"},{"fixed":"1.6.6"},{"introduced":"1.7.0"},{"fixed":"1.7.4"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"consul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.4+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"SEMVER","events":[{"introduced":"1.6.0-beta1"},{"fixed":"1.6.6"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"SEMVER","events":[{"introduced":"1.7.0"},{"fixed":"1.7.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"SEMVER","events":[{"introduced":"1.6.0-beta1"},{"fixed":"1.6.6"},{"introduced":"1.7.0"},{"fixed":"1.7.4"}]}]}],"products":[{"vendor":"hashicorp","product":"consul"}],"references":[{"url":"https://github.com/hashicorp/consul/blob/v1.6.6/CHANGELOG.md","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://github.com/hashicorp/consul/blob/v1.7.4/CHANGELOG.md","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://github.com/hashicorp/consul/pull/7783","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12758","tags":["web","advisory"]},{"url":"https://github.com/hashicorp/consul/commit/69b44fb9424cfdc05f1b7243876ab10d236ef1fc","tags":["web","fix"]},{"url":"https://github.com/advisories/GHSA-q2qr-3c2p-9235","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-12758","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-12758","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","status":"published","published":"2020-06-11T19:23:26Z","modified":"2024-08-04T12:04:22.893Z","updated_at":"2026-11-02T14:35:52.925152Z"}],"euvd":[{"id":"EUVD-2022-1142","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","status":"published","published":"2020-06-11T19:23:26Z","modified":"2024-08-04T12:04:22Z","updated_at":"2026-11-03T03:07:38.81332Z"}],"ghsa":[{"id":"GHSA-q2qr-3c2p-9235","title":"Denial of Service (DoS) in HashiCorp Consul","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.\n### Specific Go Packages Affected\ngithub.com/hashicorp/consul/agent/consul/discoverychain","status":"published","published":"2022-02-15T01:57:18Z","modified":"2023-10-02T15:08:32Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:07.641671Z"}],"nvd":[{"id":"CVE-2020-12758","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","status":"published","published":"2020-06-11T20:15:11.1Z","modified":"2026-06-17T02:52:14.957Z","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":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:06:07.249892Z"}],"osv":[{"id":"CVE-2020-12758","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","status":"published","published":"2020-06-11T20:15:11.1Z","modified":"2026-10-20T10:51:06.89922223Z","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":"2026-11-02T15:44:14.034736Z"},{"id":"DEBIAN-CVE-2020-12758","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","status":"published","published":"2020-06-11T20:15:11.1Z","modified":"2026-08-27T13:03:03.702525011Z","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":"2026-11-02T15:45:32.862554Z"},{"id":"GHSA-q2qr-3c2p-9235","title":"Denial of Service (DoS) in HashiCorp Consul","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.\n### Specific Go Packages Affected\ngithub.com/hashicorp/consul/agent/consul/discoverychain","status":"published","published":"2022-02-15T01:57:18Z","modified":"2024-08-21T15:58:57.876325Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:54.055966Z"},{"id":"BIT-consul-2020-12758","description":"HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.","status":"published","published":"2024-03-06T10:55:15.268Z","modified":"2026-09-08T08:45:58.254016867Z","updated_at":"2026-11-02T15:28:28.70813Z"},{"id":"GO-2022-0861","title":"Denial of Service (DoS) in HashiCorp Consul in github.com/hashicorp/consul","description":"Denial of Service (DoS) in HashiCorp Consul in github.com/hashicorp/consul","status":"published","published":"2024-08-21T15:29:06Z","modified":"2026-03-03T04:52:22.058982Z","updated_at":"2026-11-02T15:47:00.918515Z"}]}}