// For flags

CVE-2021-3138

Discourse 2.7.0 2FA Bypass

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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

En Discourse versiones 2.7.0 hasta beta1, una omisión del límite de velocidad conlleva a una omisión del requisito de 2FA para determinadas formularios

Discourse version 2.7.0 suffers from a 2FA bypass via a rate limiting bypass vulnerability.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-12 CVE Reserved
  • 2021-01-14 CVE Published
  • 2021-05-04 First Exploit
  • 2024-06-19 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-307: Improper Restriction of Excessive Authentication Attempts
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Discourse
Search vendor "Discourse"
 Discourse
Search vendor "Discourse" for product "Discourse"
 <= 2.6.0
Search vendor "Discourse" for product "Discourse" and version " <= 2.6.0"
-
Affected
Discourse
Search vendor "Discourse"
 Discourse
Search vendor "Discourse" for product "Discourse"
 2.7.0
Search vendor "Discourse" for product "Discourse" and version "2.7.0"
beta1
Affected