CVE-2020-8166

State: Published
Severity: 4.3 Medium
Published: Jul 2, 2020
Updated: Apr 28, 2026
Reserved: Jan 28, 2020

Description

A CSRF forgery vulnerability exists in rails < 5.2.5, rails < 6.0.4 that makes it possible for an attacker to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N	CISA-ADP

Weaknesses

CWE-352 Cross-Site Request Forgery (CSRF) (CWE-352)

Affected Products

Product	Versions
https://github.com/rails/railsn/a	Fixed in 5.2.4.3, 6.0.3.1Affected

References

https://hackerone.com/reports/732415
https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw
DSA-4766vendor-advisory

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