CVE-2026-121491
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.
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The sources do not list affected products or versions for this vulnerability yet.
0.4%33rd percentile
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Published
First publication at the source
Last modified
Latest change at the source
Collected
First seen by Baba Yaga Security