Fiber Admin vulnerabilities
Plugin slug fiber-admin · 2 known vulnerabilities · latest disclosed 2026-11-05 · WordPress.org page
Every listed vulnerability has a fix. Version 4.0.1 or later is not affected by any of them. If your site runs an older version, update it.
1 of 2 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Fiber Admin
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 5.3 | <= 4.0.0 | 4.0.1 | CVE-2026-121492 | 2026-11-05 | Advisory |
| Critical 9.8 | 3.1.0 to 4.0.0 | 4.0.1 | CVE-2026-121491 | 2026-11-05 | Advisory |
Check if a site is affected
Enter a site address to see which version of Fiber Admin and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the Fiber Admin plugin safe to use?
All 2 known issues are fixed in current versions (4.0.1 or later). Keeping it updated is what matters.
How do I check which version of Fiber Admin 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.