CVE-2021-47900

CRITICAL

Gila CMS < 2.0.0 - Unauthenticated Remote Code Execution via User-Agent Header Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47900. PoCs published by Enesdex.

AI-analyzed exploit summary This exploit targets Gila CMS 2.0.0 by leveraging unauthenticated remote code execution via manipulated cookies and headers. It injects PHP code into the User-Agent header and uses a path traversal in the GSESSIONID cookie to trigger execution.

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Enesdex · pythonwebappsphp
https://www.exploit-db.com/exploits/49412

This exploit targets Gila CMS 2.0.0 by leveraging unauthenticated remote code execution via manipulated cookies and headers. It injects PHP code into the User-Agent header and uses a path traversal in the GSESSIONID cookie to trigger execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Gila CMS 2.0.0
No auth needed
Prerequisites: Network access to the target · Gila CMS 2.0.0 running on the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49412
Various Sources product
https://gilacms.com/

Scores

CVSS v3 9.8
EPSS 0.0060
EPSS Percentile 44.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-98
Status published
Products (1)
Gila CMS/Gila CMS < 2.0.0
Published Jan 27, 2026
Tracked Since Feb 18, 2026