CVE-2021-47937

HIGH EPSS 43.8%
Published May 10, 20261mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
High
Find Similar
Published May 10, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
43.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

References 4

  • e107.org https://e107.org/
  • e107.org https://e107.org/download
  • exploit-db.com https://www.exploit-db.com/exploits/50315
  • vulncheck.com https://www.vulncheck.com/advisories/e107-cms-authenticated-remote-code-execution-via-theme-upload

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.