CVE-2026-3089
Actual Sync Server 26.2.1 - Authenticated Path Traversal
- State
- Published
- Severity
- 5.3 Medium
- Published
- Mar 9, 2026
- Updated
- Mar 9, 2026
- Reserved
- Feb 24, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | Fluid Attacks |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
Actual Sync ServerActual |
|
References
- https://fluidattacks.com/advisories/fuguethird-party-advisory
- https://github.com/actualbudget/actualproduct
- https://github.com/actualbudget/actual/pull/7067patch
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