Gila CMS up to 1.x Admin Endpoint shell_exec User-Agent filename control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Gila CMS up to 1.x. Affected by this vulnerability is the function shell_exec of the component Admin Endpoint. Executing a manipulation of the argument User-Agent can lead to filename control. The identification of this vulnerability is CVE-2021-47900. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Gila CMS up to 1.x. It has been declared as critical. This vulnerability affects the function shell_exec of the component Admin Endpoint. The manipulation of the argument User-Agent with an unknown input leads to a filename control vulnerability. The CWE definition for the vulnerability is CWE-98. The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared by Enesdex as 49412. The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2021-47900 since 01/18/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

Upgrading to version 2.0.0 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Filename control
CWE: CWE-98
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CMS 2.0.0

Timelineinfo

01/18/2026 CVE reserved
01/27/2026 +9 days Advisory disclosed
01/27/2026 +0 days VulDB entry created
01/27/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 49412
Researcher: Enesdex
Status: Confirmed

CVE: CVE-2021-47900 (🔒)
GCVE (CVE): GCVE-0-2021-47900
GCVE (VulDB): GCVE-100-343024

Entryinfo

Created: 01/27/2026 17:15
Changes: 01/27/2026 17:15 (80)
Complete: 🔍
Cache ID: 216::103

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