CVE-2026-3089 MEDIUM

CVE-2026-3089: Actual Sync Server 26.2.1 - Authenticated Path Traversal

Vendor Actual
Product Actual Sync Server
Weakness CWE-22 · Path traversal
Published March 9, 2026
Last update March 9, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 9, 2026 CVE published
March 9, 2026 Record updated

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04Related CVE

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