# CVE-2026-50179

## Summary

- **CVE ID:** CVE-2026-50179
- **Severity:** MEDIUM
- **CVSS Score:** 4.2 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N)
- **CWE:** CWE-1236
- **Published:** Jul 7, 2026
- **Last Modified:** Jul 9, 2026

## 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 Products

- actualbudget — actual (< 26.6.0)

## References

- [CNA](https://github.com/actualbudget/actual/security/advisories/GHSA-xqjm-27pc-rvwm)
- [CNA](https://github.com/actualbudget/actual/commit/068185751c03b42e726e3c60b718413d5f96c306)
- [CNA](https://github.com/actualbudget/actual/releases/tag/v26.6.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 20.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._