{"id":"CVE-2021-31232","aliases":["EUVD-2021-1352","GHSA-m45g-f45x-vv22","GO-2022-0915"],"status":"published","title":"Improper input validation in CNCF Cortex","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0037,"percentile":0.31364,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2021-04-30T12:46:32Z","modified":"2026-10-20T10:55:19Z","fixes":[{"ecosystem":"Go","package":"github.com/cortexproject/cortex","fixed_in":["1.8.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/cortexproject/cortex","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cortexproject/cortex","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.8.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cortexproject/cortex","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.8.1"}]}]}],"products":[{"vendor":"linuxfoundation","product":"cortex"}],"references":[{"url":"https://community.grafana.com/c/security-announcements","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/cortexproject/cortex","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/cortexproject/cortex/pull/4129/files","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://lists.cncf.io/g/cortex-users/message/50","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31232","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m45g-f45x-vv22","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-31232","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","status":"published","published":"2021-04-30T12:46:32Z","modified":"2024-08-03T22:55:53.349Z","updated_at":"2026-11-02T14:33:05.665371Z"}],"euvd":[{"id":"EUVD-2021-1352","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","status":"published","published":"2021-04-30T12:46:32Z","modified":"2024-08-03T22:55:53Z","updated_at":"2026-11-03T03:24:40.11662Z"}],"ghsa":[{"id":"GHSA-m45g-f45x-vv22","title":"Improper input validation in CNCF Cortex","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","status":"published","published":"2021-06-23T17:20:38Z","modified":"2023-02-01T05:05:54Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:36:35.781528Z"}],"nvd":[{"id":"CVE-2021-31232","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","status":"published","published":"2021-04-30T13:15:07.577Z","modified":"2026-06-17T03:51:29.42Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:52.81233Z"}],"osv":[{"id":"CVE-2021-31232","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","status":"published","published":"2021-04-30T13:15:07.577Z","modified":"2026-10-20T10:55:19.925197586Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:19.483607Z"},{"id":"GHSA-m45g-f45x-vv22","title":"Improper input validation in CNCF Cortex","description":"The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.","status":"published","published":"2021-06-23T17:20:38Z","modified":"2024-08-21T15:58:46.171649Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:46:51.10002Z"},{"id":"GO-2022-0915","title":"Improper input validation in CNCF Cortex in github.com/cortexproject/cortex","description":"Improper input validation in CNCF Cortex in github.com/cortexproject/cortex","status":"published","published":"2024-08-21T15:29:08Z","modified":"2026-03-03T04:51:03.443289Z","updated_at":"2026-11-02T15:47:00.918515Z"}]}}