High severity7.1NVD Advisory· Published Feb 26, 2026· Updated Jun 17, 2026
CVE-2026-27638
CVE-2026-27638
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@actual-app/sync-servernpm | < 26.2.1 | 26.2.1 |
Affected products
3cpe:2.3:a:actualbudget:actual:*:*:*:*:*:node.js:*:*+ 1 more
- cpe:2.3:a:actualbudget:actual:*:*:*:*:*:node.js:*:*range: <26.2.1
- (no CPE)range: < 26.2.1
Patches
Vulnerability mechanics
References
5- github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08nvdPatchWEB
- github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrvnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-qmjj-p7m9-wjrvghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-27638ghsaADVISORY
- github.com/actualbudget/actual/releases/tag/v26.2.1nvdProductRelease NotesWEB
News mentions
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