CVE-2021-3138

HIGH

Discourse < 2.6.0 - Brute Force

Title source: rule
STIX 2.1

Description

In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.

Exploits (1)

nomisec WORKING POC 1 stars
by Mesh3l911 · poc
https://github.com/Mesh3l911/CVE-2021-3138

References (3)

Core 3
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/releases
Third Party Advisory x_refsource_misc
https://github.com/Mesh3l911/Disource
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html

Scores

CVSS v3 7.5
EPSS 0.0266
EPSS Percentile 85.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-307
Status published
Products (2)
discourse/discourse 2.7.0 beta1
discourse/discourse < 2.6.0
Published Jan 14, 2021
Tracked Since Feb 18, 2026