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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
E107 e107 CMS affected
Version Status Constraints
2.3.0 affected —

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Project Subscriptions

Vendors Products
E107 Subscribe
E107 Cms Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://e107.org/ cve-icon cve-icon
https://e107.org/download cve-icon cve-icon
https://www.exploit-db.com/exploits/50315 cve-icon cve-icon
https://www.vulncheck.com/advisories/e107-cms-authenticated-remote-code-execution-via-theme-upload cve-icon cve-icon
History

Sun, 10 May 2026 13:00:00 +0000

Type Values Removed Values Added
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.
Title e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload
First Time appeared E107
E107 e107 Cms
Weaknesses CWE-434
CPEs cpe:2.3:a:e107:e107_cms:2.3.0:*:*:*:*:*:*:*
Vendors & Products E107
E107 e107 Cms
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-10T12:43:55.715Z

Reserved: 2026-02-01T11:24:18.717Z

Link: CVE-2021-47937

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-10T13:16:29.960

Modified: 2026-05-10T13:16:29.960

Link: CVE-2021-47937

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-10T15:00:11Z

Weaknesses