CVE-2021-47900

CRITICAL 9.8

Gila CMS < 2.0.0 - Remote Code Execution

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-98
Vendor	gila cms
Product	gila cms
Published	Jan 27, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Gila CMS / Gila CMS

0 < 2.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/49412 gilacms.com: https://gilacms.com/ github.com: https://github.com/GilaCMS/gila vulncheck.com: https://www.vulncheck.com/advisories/gila-cms-remote-code-execution

Credits

Enesdex