What’s Vulnerable › Vulnerabilities

CVE-2021-3138

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-14 · updated 2026-06-17
• Weakness: CWE-307

Description

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

Affected products

• discourse: through 2.6.0; 2.7.0-beta1

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

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