PatchSiren cyber security CVE debrief
CVE-2026-6147 lightsyncpro CVE debrief
The LightSync Pro plugin for WordPress, specifically versions up to and including 2.1.6, is vulnerable to arbitrary file uploads. This vulnerability stems from missing file type validation in the rest_replace_media() function, allowing authenticated attackers with Author-level access and above to upload arbitrary files on the affected site's server. Such uploads may lead to remote code execution, posing a significant risk to site administrators. Evidence is based on limited source detail, and further verification is recommended. The lack of file type validation could enable attackers to upload malicious files, potentially leading to remote code execution. Defenders should verify the plugin version, review file upload logs, and monitor for suspicious activity. This vulnerability is particularly concerning as it can be exploited by attackers with relatively low-level access, increasing the risk of successful exploitation. To mitigate this vulnerability, site administrators should prioritize updating the plugin to a patched version and restrict file uploads to only allow specific file types. Additionally, users should monitor for suspicious file upload activity and implement additional security measures to prevent remote code execution.
- Vendor
- lightsyncpro
- Product
- LightSync Pro – Connect & Sync Cloud Assets | Lightroom, Canva, Figma, Dropbox & Shutterstock
- CVSS
- HIGH 8.8
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-05
- Original CVE updated
- 2026-08-05
- Advisory published
- 2026-08-05
- Advisory updated
- 2026-08-05
Who should care
WordPress users with the LightSync Pro plugin installed, particularly those with Author-level access and above, should be aware of this vulnerability and take steps to mitigate it. Site administrators should prioritize updating the plugin to a patched version and restrict file uploads to only allow specific file types. Additionally, users should monitor for suspicious file upload activity and implement additional security measures to prevent remote code execution.
Technical summary
The LightSync Pro plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the rest_replace_media() function. This allows authenticated attackers with Author-level access and above to upload arbitrary files, potentially leading to remote code execution. The vulnerability is particularly concerning as it can be exploited by attackers with relatively low-level access, increasing the risk of successful exploitation.
Defensive priority
Authenticated attackers with Author-level access and above can upload arbitrary files, potentially leading to remote code execution.
Recommended defensive actions
- Verify the LightSync Pro plugin version and update to a patched version if necessary
- Restrict file uploads to only allow specific file types
- Monitor for suspicious file upload activity
- Implement additional security measures to prevent remote code execution
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
The vulnerability exists in the LightSync Pro plugin for WordPress, specifically in the rest_replace_media() function, which allows for arbitrary file uploads due to missing file type validation. Evidence is based on limited source detail, and further verification is recommended. The lack of file type validation could enable attackers to upload malicious files, potentially leading to remote code execution. Defenders should verify the plugin version, review file upload logs, and monitor for suspicious activity.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-05T08:16:41.140Z and has not been modified since then.