What is CVE-2026-27584?

CVE-2026-27584 is a high-severity vulnerability in Actualbudget Actual, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-02-24.

How severe is CVE-2026-27584?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Actualbudget Actual

CVE-2026-27584

Actual is a local-first personal finance tool. Prior to version 26.2.1, missing authentication middleware in the ActualBudget server component allows any unauthenticated user to query the SimpleFIN and Pluggy.ai integration endpoints and r…

Vulnerability class: Broken Authentication

EPSS: 0.004 (31.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Actualbudget Actual — versions < 26.2.1

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27584?: CVE-2026-27584 is a high-severity vulnerability in Actualbudget Actual, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-02-24.
How severe is CVE-2026-27584?: High severity. CVSS v3 base score is 7.5 out of 10.