WP Vulnerability WatchVulnerability data as of September 7, 2026

Known vulnerabilities in GD Security Headers

Configure various security-related HTTP headers, including CSP, XSS, Referrer Policy and more.

3Reported vulnerabilities
7.2Highest CVSS score
1.9Latest version
1,000+Active installs

What to do now

Update GD Security Headers to 1.9 or later. 3 of these have a fixed version available. Updating resolves them.

Plugin last updated: May 12, 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-2026-57403 High 7.2 0.3% 1.8 and earlier 1.9 July 8, 2026
CVE-2023-46821 High 7.2 0.6% 1.7 and earlier 1.7.1 October 29, 2023
CVE-2023-40330 Medium 6.1 0.4% 1.6.1 and earlier 1.7 August 17, 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.