CVE-2021-47900 - CVE House
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Status published Critical CVE-2021-47900

Gila CMS < 2.0.0 - Remote Code Execution

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Enesdex

References

Affected Vendor

Affected Software

Gila CMS
Vulnerable Versions:
0

Timeline

Official Publish: January 27th, 2026
Last Modified: March 5th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-98

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1505 Server Software Component
Persistence
T1105 Ingress Tool Transfer
Command and Control
T1005 Data from Local System
Collection