YesWiki before 4.6.7 contains an unrestricted file upload vulnerability that allows authenticated admins to write remote files into the… (CVE-2026-104471)
YesWiki versions before 4.6.7 have an unrestricted file upload vulnerability that allows authenticated administrators to upload and execute remote PHP files via the CSV import preview feature. This occurs because the application does not properly validate file extensions when importing CSV files referencing remote .php URLs, leading to server-side code execution.
AI Analysis
Technical Summary
The vulnerability in YesWiki prior to version 4.6.7 involves an unrestricted file upload flaw in the Bazar CSV import preview functionality. Authenticated admin users can import a CSV file containing references to remote PHP files in file or image fields. These files are saved into the web-accessible files/ directory without extension validation, allowing the uploaded PHP code to execute on the server. This results in a critical security risk due to remote code execution capabilities.
Potential Impact
Successful exploitation allows an authenticated administrator to upload and execute arbitrary PHP code on the server, leading to full compromise of the web server, including confidentiality, integrity, and availability impacts. The CVSS score of 7.2 (high) reflects the network attack vector, low attack complexity, and high privileges required (admin), with no user interaction needed.
Mitigation Recommendations
A fix is available in YesWiki version 4.6.7. Users should upgrade to version 4.6.7 or later to remediate this vulnerability. Until patched, restrict administrative access and avoid importing CSV files from untrusted sources. No vendor advisory content was provided, so check the official YesWiki resources for the latest remediation guidance.
YesWiki before 4.6.7 contains an unrestricted file upload vulnerability that allows authenticated admins to write remote files into the… (CVE-2026-104471)
Description
YesWiki versions before 4.6.7 have an unrestricted file upload vulnerability that allows authenticated administrators to upload and execute remote PHP files via the CSV import preview feature. This occurs because the application does not properly validate file extensions when importing CSV files referencing remote .php URLs, leading to server-side code execution.
CVSS v3.1
Score 7.2high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in YesWiki prior to version 4.6.7 involves an unrestricted file upload flaw in the Bazar CSV import preview functionality. Authenticated admin users can import a CSV file containing references to remote PHP files in file or image fields. These files are saved into the web-accessible files/ directory without extension validation, allowing the uploaded PHP code to execute on the server. This results in a critical security risk due to remote code execution capabilities.
Potential Impact
Successful exploitation allows an authenticated administrator to upload and execute arbitrary PHP code on the server, leading to full compromise of the web server, including confidentiality, integrity, and availability impacts. The CVSS score of 7.2 (high) reflects the network attack vector, low attack complexity, and high privileges required (admin), with no user interaction needed.
Mitigation Recommendations
A fix is available in YesWiki version 4.6.7. Users should upgrade to version 4.6.7 or later to remediate this vulnerability. Until patched, restrict administrative access and avoid importing CSV files from untrusted sources. No vendor advisory content was provided, so check the official YesWiki resources for the latest remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-g4m2-8g7g-xw8c
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104471"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6abfee88a43b0b3b89e54bde
Added to database: 10/02/2026, 17:48:56 UTC
Last enriched: 10/02/2026, 17:57:39 UTC
Last updated: 10/02/2026, 21:46:09 UTC
Views: 3
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