CVE-2021-3138: In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms

High severity · published Jan 14, 2021

CVE-2021-3138

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

7.5

CVSS

3.1%

EPSS

On KEV

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)3.1% · higher than 88% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Discourse · Discourse

through 2.6.0; 2.7.0 · source: NVD

Affected product

Discourse

All Discourse CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-3138

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-3138

Exploit

http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html

Third Party Advisory

https://github.com/Mesh3l911/Disource

Release Notes

https://github.com/discourse/discourse/releases