WordPress plugin
Fiber Admin security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 2 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
2Known vulnerabilities
- Critical1
- High0
- Medium1
- Low0
All Fiber Admin vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤4.0.0Update to 4.0.1 | CVE-2026-121492 | |
| Critical9.8 | 4.0.0 - Unauthenticated Remote Code Execution 3.1.0 – 4.0.0Update to 4.0.1 | CVE-2026-121491 |
- Medium5.3Missing Authorization
≤4.0.0Update to 4.0.1
- Critical9.84.0.0 - Unauthenticated Remote Code Execution
3.1.0 – 4.0.0Update to 4.0.1
Fiber Admin: common questions
Does Fiber Admin have known vulnerabilities?
Yes. VulnCrest Radar lists 2 known vulnerabilities in Fiber Admin: 1 critical, 1 medium. None are known to affect version null.
How do I check which version of Fiber Admin I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Fiber Admin vulnerability?
CVE-2026-121492, published Nov 5, 2026: Fiber Admin <= 4.0.0 - Missing Authorization. Severity: Medium (CVSS 5.3).
Is any Fiber Admin vulnerability listed in CISA KEV?
No. None of the known Fiber Admin vulnerabilities is currently listed in the CISA KEV catalog.