CVE-2026-27638

Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints (`/sync/*`) don't verify that the authenticated user owns or has access to the file being operated on. Any authenticated user can read, modify, and overwrite any other user's budget files by providing their file ID. Version 26.2.1 patches the issue.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08	Patch
https://github.com/actualbudget/actual/releases/tag/v26.2.1	Product Release Notes
https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:actualbudget:actual:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-02-26 23:16

Updated : 2026-02-27 17:03

NVD link : CVE-2026-27638

Mitre link : CVE-2026-27638

CVE.ORG link : CVE-2026-27638

JSON object : View

Products Affected

actualbudget

actual

CWE

CWE-862

Missing Authorization

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