CVE-2021-47937 - CVE House
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Status published High CVE-2021-47937

e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload

Vulnerability Description

e107 CMS 2.3.0 contains a remote code execution vulnerability that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files. Attackers can upload a crafted theme package through the theme.php endpoint that deploys a web shell to the e107_themes directory, then execute system commands via the payload.php script.

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:

  • Halit AKAYDIN (hLtAkydn)

Affected Vendor

Affected Software

e107 CMS
Vulnerable Versions:
2.3.0

Timeline

Official Publish: May 10th, 2026
Last Modified: May 12th, 2026
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)