An open redirect vulnerability exists in Okta OIDC Middleware prior to version 5.0.0 allowing an attacker to redirect a user to an arbitrary URL.

Affected: npm: @okta/oidc-middleware

An open redirect vulnerability exists in Okta OIDC Middleware prior to version 5.0.0 allowing an attacker to redirect a user to an arbitrary URL.

**Affected products and versions** Okta OIDC Middleware prior to version 5.0.0.

**Resolution** The vulnerability is fixed in OIDC Middleware 5.0.0. To remediate this vulnerability, upgrade Okta OIDC Middleware to this version or later.

**CVE details** **CVE ID:** [CVE-2022-3145](https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-3145) **Published Date:** 01/05/2023 **Vulnerability Type:** Open Redirect **CWE:** CWE-601 **CVSS v3.1 Score:** 4.3 **Severity:** Medium **Vector string:** AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

**Severity Details** To exploit this issue, an attacker would need to send a victim a malformed URL containing a target server that they control. Once a user successfully completed the login process, the victim user would then be redirected to the attacker controlled site.

**References** https://github.com/okta/okta-oidc-middleware