What’s Vulnerable › Vulnerabilities

CVE-2021-47937: e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-10 · updated 2026-07-25
• Weakness: CWE-434

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

• e107 CMS: 2.3.0

References

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

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