HomeWordPress vulnerabilitiesWP OAuth Server (OAuth Authentication)
WP OAuth Server (OAuth Authentication) vulnerabilities
WP OAuth Server (OAuth Authentication) has 5 known vulnerabilities in this database. The most recent published record is dated 20 Mar 2023.
- Known vulnerabilities
- 5
- Active installs
- 3,000+
- Latest version
- 4.5.2
- Last updated
- 24 Sep 2026
- Most recent
- 20 Mar 2023
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site request forgery (CSRF) CVE-2022-3894 | Medium 4.3 | Before 4.2.5 | Fixed in 4.2.5 | 20 Mar 2023 |
| Cross-site request forgery (CSRF) CVE-2022-4148 | Medium 4.3 | Before 4.3.0 | Fixed in 4.3.0 | 20 Mar 2023 |
| Cross-site scripting (XSS) CVE-2022-3892 | Medium 4.8 | Before 4.2.2 | Fixed in 4.2.2 | 5 Dec 2022 |
| Cross-site request forgery (CSRF) CVE-2022-3926 | Medium 6.5 | Before 3.4.2 | Fixed in 3.4.2 | 5 Dec 2022 |
| Security weakness CVE-2015-9435 | Critical 9.8 | Before 3.1.5 | Fixed in 3.1.5 | 26 Sep 2019 |
Read the published descriptions
- CVE-2022-3894, 20 Mar 2023
- The WP OAuth Server (OAuth Authentication) WordPress plugin before 4.2.5 does not have CSRF check when deleting a client, and does not ensure that the object to be deleted is actually a client, which could allow attackers to make a logged in admin delete arbitrary client and post via a CSRF attack. CVE record
- CVE-2022-4148, 20 Mar 2023
- The WP OAuth Server (OAuth Authentication) WordPress plugin before 4.3.0 has a flawed CSRF and authorisation check when deleting a client, which could allow any authenticated users, such as subscriber to delete arbitrary client. CVE record
- CVE-2022-3892, 5 Dec 2022
- The WP OAuth Server (OAuth Authentication) WordPress plugin before 4.2.2 does not sanitize and escape Client IDs, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup) CVE record
- CVE-2022-3926, 5 Dec 2022
- The WP OAuth Server (OAuth Authentication) WordPress plugin before 3.4.2 does not have CSRF check when regenerating secrets, which could allow attackers to make logged in admins regenerate the secret of an arbitrary client given they know the client ID CVE record
- CVE-2015-9435, 26 Sep 2019
- The oauth2-provider plugin before 3.1.5 for WordPress has incorrect generation of random numbers. CVE record
What to do if you run WP OAuth Server (OAuth Authentication)
If you run WP OAuth Server (OAuth Authentication), open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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