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CVE-2026-27584

Actualbudget Actual authentication bypass

7.5 HIGHPublic exploitEPSS 0.56%
  1. Published24 Feb 2026

Description

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 read sensitive bank account balance and transaction information. This vulnerability allows an unauthenticated attacker to read the bank account balance and transaction history of ActualBudget users. This vulnerability impacts all ActualBudget Server users with the SimpleFIN or Pluggy.ai integrations configured. The ActualBudget Server instance must be reachable over the network. Version 26.2.1 patches the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Actualbudget Actual< 26.2.1

Remediation

Fixed in
Actualbudget Actual≥ 26.2.1

References

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Frequently asked

Is CVE-2026-27584 being actively exploited?

CVE-2026-27584 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.56%.

How severe is CVE-2026-27584?

CVE-2026-27584 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.56% probability of exploitation.

Which products are affected by CVE-2026-27584?

Affected products include Actualbudget Actual.

How do I fix CVE-2026-27584?

Upgrade affected software to a fixed version, for example Actualbudget Actual 26.2.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-27584 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.