Description
The Fiber Admin WordPress plugin before 4.0.1 does not validate or escape a request header before writing it into a PHP file it regenerates on an unprotected admin hook, allowing unauthenticated attackers to execute arbitrary code when its custom database error page is enabled and they win a race against an administrator saving its settings.
Published:
2026-11-07
Score:
n/a
EPSS:
n/a
KEV:
No
Impact:
n/a
Action:
n/a
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Unknown | Fiber Admin | unaffected |
|
No data.
No data.
No data available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
No advisories yet.
References
History
Sat, 07 Nov 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The Fiber Admin WordPress plugin before 4.0.1 does not validate or escape a request header before writing it into a PHP file it regenerates on an unprotected admin hook, allowing unauthenticated attackers to execute arbitrary code when its custom database error page is enabled and they win a race against an administrator saving its settings. | |
| Title | Fiber Admin 3.1.0 - 4.0.0 - Unauthenticated RCE via Host Header | |
| References |
|
Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2026-11-07T06:00:26.885Z
Reserved: 2026-11-03T14:07:07.923Z
Link: CVE-2026-121491
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-11-07T06:16:58.280
Modified: 2026-11-07T06:16:58.280
Link: CVE-2026-121491
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses
No weakness.