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.

INFO

Published Date :

2026-03-09T14:08:55.998Z

Last Modified :

2026-03-09T14:54:24.136Z

Source :

Fluid Attacks
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3089 vulnerability.

Vendors Products
Actual
  • Actual Sync Server
Actualbudget
  • Actual
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3089.

URL Resource
https://fluidattacks.com/advisories/fugue cve-icon cve-icon cve-icon
https://github.com/actualbudget/actual cve-icon cve-icon
https://github.com/actualbudget/actual/pull/7067 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact