CVE-2026-3089 — Actual Sync Server 26.2.1 - Authenticated Path Traversal
Actual Sync Server allows authenticated users to upload files through POST /sync/upload-user-file. In versions prior to 26.3.0, improper validation of the user-controlled x-actu…
Published: 2026-03-09 · CVSS: 5.3 · CVSS 4.0
Actual Sync Server allows authenticated users to upload files through POST /sync/upload-user-file. In versions prior to 26.3.0, improper validation of the user-controlled x-actual-file-id header means that traversal segments (../) can escape the intended directory and write files outside userFiles.This issue affects prior versions of Actual Sync Server 26.3.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7