WP Vulnerability WatchVulnerability data as of September 7, 2026

Known vulnerabilities in XO Security

XO Security is a plugin to enhance login related security.

1Reported vulnerabilities
6.1Highest CVSS score
3.11.0Latest version
30,000+Active installs

What to do now

Update XO Security to 1.5.3 or later. 1 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 19, 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-2017-18541 Medium 6.1 0.9% Before 1.5.3 1.5.3 August 16, 2019

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