CVE-2026-27638

HIGH

7.1

Description

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.

CVE Details

CVSS v3.1 Score7.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/26/2026

Last Modified2/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

actualbudget:actual

Weaknesses (CWE)

CWE-862

References

https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08(security-advisories@github.com)

https://github.com/actualbudget/actual/releases/tag/v26.2.1(security-advisories@github.com)

https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv(security-advisories@github.com)

IOC Correlations

No correlations recorded

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