WP OAuth Server (OAuth Authentication)

oauth2-provider · plugin

Known security vulnerabilities for WP OAuth Server (OAuth Authentication). Find out in seconds which version runs on your site with WP Lens.

3 known vulnerabilities

1 critical · 2 exploitable without logging in · latest Sep 30, 2026

Listed on wordpress.org · latest 4.5.2 · last updated Sep 24, 2026 · 3K+ installs

wordpress.org status checked on Oct 2, 2026

Vulnerabilities

CVE-2015-9435unauthenticated
The oauth2-provider plugin before 3.1.5 for WordPress has incorrect generation of random numbers.
Critical 9.8
CVE-2026-97288contributor+≤ 4.5.1
WordPress OAuth Server plugin <= 4.5.1 - Cross Site Scripting (XSS) vulnerability
Medium 6.5
CVE-2024-31253unauthenticated · needs a click≤ 4.3.3
WordPress WP OAuth Server (OAuth Authentication) plugin <= 4.3.3 - Open Redirection vulnerability
Medium 6.1

The access label is read from the record's own text (e.g. “subscriber+”: subscriber and above). When the text names no role, CVSS decides between “login required” and “high privilege”; no role name is invented. “Needs a click”: the attack depends on a logged-in user following a link (CSRF, reflected XSS).

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