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CVE-2021-47937

e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload

Published: May 10, 2026Updated: Jul 25, 2026 Sources: CVE List NVDCWE-434
8.8HIGH
NVD MITRE
EPSS Score
0.6%
Top 55.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-434

Affected Products

E107
oss-projectaka e107 cms
e107 CMSOn-premCMS Plugin
Web & CMS Plugins / cms-core

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
View detailed technique mapping

References

https://e107.org/
e107.org
https://e107.org/download
e107.org
https://www.exploit-db.com/exploits/50315
exploit-db.com
and 1 more references View all →

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