Vulnerability · Published Jul 7, 2026 · Assigned by GitHub_M
CVE-2026-46672Actual: CSV Formula Injection in `@actual-app/cli` `--format csv` Output via Custom `escapeCsv` Helper
Medium 4.6
In plain English
A medium-severity security flaw in actual from actualbudget. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Actual is a local-first personal finance app. Prior to 26.6.0, @actual-app/cli ships a hand-rolled CSV serializer in packages/cli/src/output.ts used whenever the global --format csv option is passed, whose escapeCsv helper only handles RFC 4180 delimiter, quote, and newline escaping and does not neutralize standard CSV formula-injection prefixes. Any CLI command that streams an object array containing user-controlled strings, including transactions list, accounts list, payees list, categories list, tags list, category-groups list, rules list, schedules list, and query, can emit cells that auto-evaluate when the resulting CSV is opened in Excel, LibreOffice Calc, or Google Sheets, enabling data exfiltration and arbitrary formula execution. This issue is fixed in version 26.6.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @actual-app/cli | 26.6.0 | GHSA-7gh7-258j-4mpq |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| actualbudget | actual | < 26.6.0 |
Weakness: CWE-1236 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- https://github.com/actualbudget/actual/security/advisories/GHSA-7gh7-258j-4mpq x_refsource_CONFIRM
- https://github.com/actualbudget/actual/pull/7859 x_refsource_MISC
- https://github.com/actualbudget/actual/commit/068185751c03b42e726e3c60b718413d5f96c306 x_refsource_MISC
- https://github.com/actualbudget/actual/releases/tag/v26.6.0 x_refsource_MISC