CVE-2026-6561: Unrestricted Upload in EyouCMS
A vulnerability was detected in EyouCMS up to 1.7.1. This issue affects the function edit_adminlogo of the file application/admin/controller/Index.php. Performing a manipulation of the argument filename results in unrestricted upload. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
AI Analysis
Technical Summary
EyouCMS versions 1.7.0 and 1.7.1 contain an unrestricted upload vulnerability in the edit_adminlogo function within application/admin/controller/Index.php. By manipulating the filename parameter, an attacker with high privileges can upload arbitrary files remotely. This vulnerability has a CVSS 4.0 base score of 5.1, indicating medium severity. The vendor has not provided a fix or advisory, and the exploit is publicly disclosed.
Potential Impact
Successful exploitation allows an attacker with high privileges to upload arbitrary files to the server remotely, potentially leading to unauthorized file placement. The vulnerability has limited impact due to the requirement for high privileges and no user interaction. There are no confirmed reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official fix is available, users should consider restricting access to the affected functionality and monitor for suspicious activity related to file uploads. Avoid exposing administrative interfaces publicly until a fix is released.
CVE-2026-6561: Unrestricted Upload in EyouCMS
Description
A vulnerability was detected in EyouCMS up to 1.7.1. This issue affects the function edit_adminlogo of the file application/admin/controller/Index.php. Performing a manipulation of the argument filename results in unrestricted upload. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS v4.0
Score 5.1medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
EyouCMS versions 1.7.0 and 1.7.1 contain an unrestricted upload vulnerability in the edit_adminlogo function within application/admin/controller/Index.php. By manipulating the filename parameter, an attacker with high privileges can upload arbitrary files remotely. This vulnerability has a CVSS 4.0 base score of 5.1, indicating medium severity. The vendor has not provided a fix or advisory, and the exploit is publicly disclosed.
Potential Impact
Successful exploitation allows an attacker with high privileges to upload arbitrary files to the server remotely, potentially leading to unauthorized file placement. The vulnerability has limited impact due to the requirement for high privileges and no user interaction. There are no confirmed reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official fix is available, users should consider restricting access to the affected functionality and monitor for suspicious activity related to file uploads. Avoid exposing administrative interfaces publicly until a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-18T15:58:33.191Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e484bd19fe3cd2cd25f971
Added to database: 4/19/2026, 7:31:09 AM
Last enriched: 4/27/2026, 12:24:02 AM
Last updated: 6/5/2026, 2:21:15 PM
Views: 88
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