What’s Vulnerable › Vulnerabilities

CVE-2026-46672: Actual: CSV Formula Injection in `@actual-app/cli` `--format csv` Output via Custom `escapeCsv` Helper

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-07 · updated 2026-10-25
• Weakness: CWE-1236

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 products

• actualbudget actual: before 26.6.0

References

• https://github.com/actualbudget/actual/commit/068185751c03b42e726e3c60b718413d5f96c306
• https://github.com/actualbudget/actual/pull/7859
• https://github.com/actualbudget/actual/releases/tag/v26.6.0
• https://github.com/actualbudget/actual/security/advisories/GHSA-7gh7-258j-4mpq
• https://github.com/actualbudget/actual/security/advisories/GHSA-7gh7-258j-4mpq

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