WP Security CheckVulnerability data as of October 22, 2026

Known vulnerabilities in WP OAuth Server (OAuth Authentication)

Adds Authentication through OAuth 2. Provides the ability for Single Sign On for websites & Mobile Applications.

8Reported vulnerabilities
9.8Highest CVSS score
4.5.1Latest version
3,000+Active installs

What to do now

Update WP OAuth Server (OAuth Authentication) to 4.5.2 or later. 8 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 14, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVESeverityExploit probability
next 30 days		 Affected versionsFixed inPublished
CVE-2022-3926 Medium 6.5 0.3% Before 3.4.2 3.4.2 December 5, 2022
CVE-2015-9435 Critical 9.8 2.1% Before 3.1.5 3.1.5 September 26, 2019
CVE-2022-3892 Medium 4.8 0.5% Before 4.2.2 4.2.2 December 5, 2022
CVE-2022-4148 Medium 4.3 0.3% Before 4.3.0 4.3.0 March 20, 2023
CVE-2022-3894 Medium 4.3 0.3% Before 4.2.5 4.2.5 March 20, 2023
CVE-2026-97288 Medium 6.4 0.1% 4.5.1 and earlier 4.5.2 September 30, 2026
CVE-2024-31253 Medium 5.4 0.4% 4.3.3 and earlier 4.4.0 April 5, 2024
WF-9fdc9d20-a1cf-4a58-b250-4f3f56b77b69 Medium 5.4 — 4.2.5 and earlier 4.3.0 January 26, 2023

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.