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OpenAdvisories
High · 8.8 CVE-2021-47937 EUVD-2021-34798GHSA-2ggw-79xf-f33h

e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload

Published May 10, 2026 · Updated May 12, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
E107 e107 CMS 2.3.0 —

References