CVE-2021-3138

HIGH 7.5CVE-2021-3138 · Published 14/01/2021 · updated 17/06/2026

In short

CVE-2021-3138 is a HIGH (CVSS 7.5) vulnerability affecting discourse (discourse).
Chance of exploitation in the next 30 days (EPSS): 3.1%, higher than 87.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
discourse discourse	`= 2.7.0≤ 2.6.0`	No fix yet

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

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

= 2.7.0≤ 2.6.0

No fix yet

More vulnerabilities in discourse

See all →