{"id":"CVE-2026-50179","aliases":["GHSA-xqjm-27pc-rvwm"],"url":"https://o3.security/vulnerability/CVE-2026-50179","summary":"Actual: CSV Formula Injection in Transaction Export via Imported Payee/Notes Fields","details":"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.","published":"2026-07-07T20:58:16.074Z","modified":"2026-08-12T03:51:15.000006536Z","cvss":{"score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N"},"epss":{"score":0.00286,"percentile":0.20824,"asOf":"2026-09-07"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@actual-app/web","fixedVersion":"26.6.0"}],"fix":{"url":"https://github.com/actualbudget/actual/commit/068185751c03b42e726e3c60b718413d5f96c306","label":"actualbudget/actual@0681857"},"references":[{"type":"WEB","url":"https://github.com/actualbudget/actual/releases/tag/v26.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50179.json"},{"type":"ADVISORY","url":"https://github.com/actualbudget/actual/security/advisories/GHSA-xqjm-27pc-rvwm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50179"},{"type":"FIX","url":"https://github.com/actualbudget/actual/commit/068185751c03b42e726e3c60b718413d5f96c306"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:15.000006536Z"}}