CVE-2026-6147: CWE-434 Unrestricted Upload of File with Dangerous Type in lightsyncpro LightSync Pro – Connect & Sync Cloud Assets | Lightroom, Canva, Figma, Dropbox & Shutterstock
The LightSync Pro WordPress plugin up to version 2.1.6 has a vulnerability allowing authenticated users with Author-level access or higher to upload arbitrary files due to missing file type validation. This flaw exists in the rest_replace_media() function and could lead to remote code execution on the affected server.
AI Analysis
Technical Summary
CVE-2026-6147 is a vulnerability in the LightSync Pro plugin for WordPress, specifically in the rest_replace_media() function. The plugin fails to validate file types properly, enabling authenticated attackers with Author-level privileges or above to upload arbitrary files. This unrestricted file upload vulnerability (CWE-434) affects all versions up to and including 2.1.6. Successful exploitation may allow remote code execution on the server hosting the vulnerable plugin.
Potential Impact
An attacker with Author-level access or higher can upload arbitrary files to the server, potentially leading to remote code execution. This compromises the confidentiality, integrity, and availability of the affected system. The CVSS v3.1 base score is 8.8 (high severity), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Author-level access and above to trusted users only. Monitor for suspicious file uploads and consider disabling or limiting the use of the rest_replace_media() function if possible.
CVE-2026-6147: CWE-434 Unrestricted Upload of File with Dangerous Type in lightsyncpro LightSync Pro – Connect & Sync Cloud Assets | Lightroom, Canva, Figma, Dropbox & Shutterstock
Description
The LightSync Pro WordPress plugin up to version 2.1.6 has a vulnerability allowing authenticated users with Author-level access or higher to upload arbitrary files due to missing file type validation. This flaw exists in the rest_replace_media() function and could lead to remote code execution on the affected server.
CVSS v3.1
Score 8.8high
Affected software
lightsyncpro
LightSync Pro – Connect & Sync Cloud Assets | Lightroom, Canva, Figma, Dropbox & Shutterstock
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6147 is a vulnerability in the LightSync Pro plugin for WordPress, specifically in the rest_replace_media() function. The plugin fails to validate file types properly, enabling authenticated attackers with Author-level privileges or above to upload arbitrary files. This unrestricted file upload vulnerability (CWE-434) affects all versions up to and including 2.1.6. Successful exploitation may allow remote code execution on the server hosting the vulnerable plugin.
Potential Impact
An attacker with Author-level access or higher can upload arbitrary files to the server, potentially leading to remote code execution. This compromises the confidentiality, integrity, and availability of the affected system. The CVSS v3.1 base score is 8.8 (high severity), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Author-level access and above to trusted users only. Monitor for suspicious file uploads and consider disabling or limiting the use of the rest_replace_media() function if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-12T17:39:58.926Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a72e5c9bf8831d53973512e
Added to database: 08/05/2026, 07:27:05 UTC
Last enriched: 08/12/2026, 15:50:00 UTC
Last updated: 09/17/2026, 22:01:37 UTC
Views: 32
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