{"cve":"CVE-2021-3138","nvd":{"published":"2021-01-14T04:15:15.073","modified":"2026-06-17T04:04:44.007","status":"Modified","description":"In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-307"],"references":["http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html","https://github.com/Mesh3l911/Disource","https://github.com/discourse/discourse/releases","http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html","https://github.com/Mesh3l911/Disource"],"products":["discourse:discourse"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-3138","score":0.0311,"percentile":0.87794,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}