CVE-2026-27638
HIGH WAF: Low
CVSS 7.1
Published: 2026-02-26
CWE-862
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.
WAF Coverage Analysis
Missing Authorization
Low WAF Coverage
OWASP: A01:2021 Broken Access Control
Affected Software
| Vendor | Product | Version |
|---|---|---|
| actualbudget | actual | up to 26.2.1 |
References
- github.com (Patch)
- github.com (Product, Release Notes)
- github.com (Exploit, Vendor Advisory)