GD Security Headers vulnerabilities
Plugin slug gd-security-headers · 3 known vulnerabilities · latest disclosed 2026-07-08 · WordPress.org page
Every listed vulnerability has a fix. Version 1.9 or later is not affected by any of them. If your site runs an older version, update it.
2 of 3 rated high or critical (CVSS 7 or more).
Known vulnerabilities in GD Security Headers
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| High 7.2 | <= 1.8 | 1.9 | CVE-2026-57403 | 2026-07-08 | Advisory |
| High 7.2 | <= 1.7 | 1.7.1 | CVE-2023-46821 | 2023-10-29 | Advisory |
| Medium 6.1 | <= 1.6.1 | 1.7 | CVE-2023-40330 | 2023-08-17 | Advisory |
Check if a site is affected
Enter a site address to see which version of GD Security Headers and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the GD Security Headers plugin safe to use?
All 3 known issues are fixed in current versions (1.9 or later). Keeping it updated is what matters.
How do I check which version of GD Security Headers my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.