CVE-2026-3089
Actual Sync Server 26.2.1 - Authenticated Path Traversal
Summary
Actual Sync Server 26.2.1 - Authenticated Path Traversal
Original description
The description as published by the source.
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: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
References
- advisory fluidattacks.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- web registry.npmjs.org