CVE-2026-80237: CWE-434 Unrestricted Upload of File with Dangerous Type in Thinking Software Technology Efence
Description
EFence by Thinking Software Technology contains an Arbitrary File Upload vulnerability (CWE-434) that allows authenticated remote attackers to upload and execute web shell backdoors, leading to arbitrary code execution on the server. The vulnerability has a high severity with a CVSS score of 8.8. No affected versions or patch information are provided, and no known exploits are reported in the wild.
CVSS v3.1
Score 8.8high
Affected software
Thinking Software Technology
Efence
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-80237 describes an Arbitrary File Upload vulnerability in EFence developed by Thinking Software Technology. Authenticated attackers can upload files with dangerous types, such as web shells, which can be executed on the server, enabling arbitrary code execution. The vulnerability is classified under CWE-434 and has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation allows authenticated attackers to upload and execute malicious files on the server, resulting in full arbitrary code execution. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict authenticated user permissions to limit file upload capabilities and monitor for suspicious activity related to file uploads.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- twcert
- Date Reserved
- 2026-08-26T05:58:53.079Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8ea959acd9273b499fef58
Added to database: 08/26/2026, 08:52:41 UTC
Last enriched: 09/09/2026, 19:37:19 UTC
Last updated: 10/09/2026, 06:48:19 UTC
Views: 67
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