Critical severity9.8NVD Advisory· Published Jan 27, 2026· Updated Apr 15, 2026
CVE-2021-47900
CVE-2021-47900
Description
Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent header with shell_exec() to run system commands by sending crafted requests to the admin endpoint.
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Affected products
2Patches
Vulnerability mechanics
References
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