CVE-2026-39527: CWE-434 Unrestricted Upload of File with Dangerous Type in sc Internet Vivoo WpStream
Subscriber Arbitrary File Upload in WpStream < 4.11.2 versions.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-39527, affects WpStream versions before 4.11.2 and is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type). It allows authenticated subscribers to upload arbitrary files without proper restrictions, potentially leading to integrity and availability issues. The CVSS 3.1 base score is 5.4, reflecting a medium severity with network attack vector, low attack complexity, and no user interaction required. There is no vendor advisory or patch information available at this time, and no known exploits have been reported in the wild.
Potential Impact
The vulnerability can be exploited by authenticated subscribers to upload arbitrary files, which may lead to modification or disruption of service (integrity and availability impacts). Confidentiality is not impacted according to the CVSS vector. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict subscriber permissions and monitor file upload functionality closely to mitigate potential abuse.
CVE-2026-39527: CWE-434 Unrestricted Upload of File with Dangerous Type in sc Internet Vivoo WpStream
Description
Subscriber Arbitrary File Upload in WpStream < 4.11.2 versions.
CVSS v3.1
Score 5.4medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-39527, affects WpStream versions before 4.11.2 and is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type). It allows authenticated subscribers to upload arbitrary files without proper restrictions, potentially leading to integrity and availability issues. The CVSS 3.1 base score is 5.4, reflecting a medium severity with network attack vector, low attack complexity, and no user interaction required. There is no vendor advisory or patch information available at this time, and no known exploits have been reported in the wild.
Potential Impact
The vulnerability can be exploited by authenticated subscribers to upload arbitrary files, which may lead to modification or disruption of service (integrity and availability impacts). Confidentiality is not impacted according to the CVSS vector. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict subscriber permissions and monitor file upload functionality closely to mitigate potential abuse.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-04-07T10:48:09.605Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3061450b89be688893cffe
Added to database: 6/15/2026, 8:32:05 PM
Last enriched: 6/15/2026, 10:01:43 PM
Last updated: 6/16/2026, 6:46:00 AM
Views: 9
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