Vulnerability · Published Jul 7, 2026 · Assigned by GitHub_M
CVE-2026-50179Actual: CSV Formula Injection in Transaction Export via Imported Payee/Notes Fields
Medium 4.2
In plain English
A medium-severity security flaw in actual from actualbudget. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Actual is a local-first personal finance tool. Prior to 26.6.0, exportToCSV and exportQueryToCSV in packages/loot-core/src/server/transactions/export/export-to-csv.ts pass user-controlled Payee, Notes, Account, and Category strings to csv-stringify with no cast callback and no formula-prefix neutralization. Strings that begin with equals sign, plus, minus, at sign, tab, or carriage return survive verbatim into the exported CSV, and when a recipient opens the file in Excel, LibreOffice Calc, or Google Sheets, the strings are interpreted as formulas, enabling transaction data exfiltration and attacker-chosen spreadsheet display values. This issue is fixed in version 26.6.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @actual-app/web | 26.6.0 | GHSA-xqjm-27pc-rvwm |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| actualbudget | actual | < 26.6.0 |
Weakness: CWE-1236 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N