CVE-2020-15240 is a critical authentication bypass vulnerability affecting omniauth-auth0 (rubygems) versions 2.3.0 through 2.4.0, stemming from improper JWT token signature validation when using the jwt_validator.verify method or not utilizing the SDK’s default Authorization Code Flow. With a CVSS score of 9.1 (CRITICAL), this flaw allows unauthenticated attackers to bypass security controls, potentially leading to full compromise of confidentiality and integrity. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability. Organizations using affected versions should upgrade to 2.4.1 immediately to mitigate the risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.3.0, < 2.4.1CPE matchmatch criteria | cpe:2.3:a:auth0:omniauth-auth0:*:*:*:*:*:ruby:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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