{"id":"CVE-2021-3138","aliases":["BIT-discourse-2021-3138","EUVD-2021-26485","GHSA-w9c3-h2rq-jrff"],"status":"published","title":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement...","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0311,"percentile":0.87901,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-307"],"published":"2021-01-14T03:30:11Z","modified":"2026-10-20T10:54:39Z","exploits":[{"source":"pocgithub","id":"Mesh3l911/CVE-2021-3138","title":"Mesh3l911/CVE-2021-3138","date":"2021-01-12","url":"https://github.com/Mesh3l911/CVE-2021-3138"}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"discourse","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.6.0"}]}]}],"products":[{"vendor":"discourse","product":"discourse"}],"references":[{"url":"https://github.com/discourse/discourse/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://github.com/Mesh3l911/Disource","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3138","tags":["web"]},{"url":"https://blog.discourse.org/"},{"url":"https://github.com/advisories/GHSA-w9c3-h2rq-jrff"}],"sources":{"cve":[{"id":"CVE-2021-3138","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","status":"published","published":"2021-01-14T03:30:11Z","modified":"2024-08-03T16:45:51.392Z","updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26485","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","status":"published","published":"2021-01-14T03:30:11Z","modified":"2024-08-03T16:45:51Z","updated_at":"2026-11-03T03:25:13.531128Z"}],"ghsa":[{"id":"GHSA-w9c3-h2rq-jrff","title":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement...","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","status":"published","published":"2022-05-24T17:39:24Z","modified":"2023-01-29T05:05:25Z","cwes":["CWE-307"],"updated_at":"2026-11-02T14:45:47.324105Z"}],"nvd":[{"id":"CVE-2021-3138","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","status":"published","published":"2021-01-14T04:15:15.073Z","modified":"2026-06-17T04:04:44.007Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:06:49.284888Z"}],"osv":[{"id":"CVE-2021-3138","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","status":"published","published":"2021-01-14T04:15:15.073Z","modified":"2026-10-20T10:54:39.674915226Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:19.483607Z"},{"id":"BIT-discourse-2021-3138","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","status":"published","published":"2024-03-06T11:10:13.104Z","modified":"2026-09-08T08:46:02.226676635Z","updated_at":"2026-11-02T15:28:28.70813Z"}]}}