LightSync Pro author media replacement permits arbitrary file uploads
LightSync Pro through 2.1.6 lets an authenticated Author reach rest_replace_media(), which accepts an uploaded replacement without validating its file type. An Author can therefore place an arbitrary file on the server; if the destination is executable by the web server, the upload can lead to remote code execution and full site compromise. The CNA does not disclose the REST route, HTTP method, upload parameter, media identifier or final file-write API.
- Component
- LightSync Pro – Connect & Sync Cloud Assets | Lightroom, Canva, Figma, Dropbox & Shutterstock
- Plugin slug
lightsyncpro- Affected
- <= 2.1.6
- Safe version
> 2.1.6- Published
- Aug 05, 2026
This CVE was published Aug 05, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update LightSync Pro to a release after 2.1.6. The authoritative record links a trunk correction but does not identify the first fixed release. Inspect media and upload directories for unexpected executable files and review Author-level accounts and REST activity.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The LightSync Pro plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the rest_replace_media() function in all versions up to, and including, 2.1.6. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H