Is CVE-2026-27584 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-27584, but active exploitation has not been confirmed.

Can CVE-2026-27584 be exploited remotely?

Yes. CVE-2026-27584 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27584?

CVE-2026-27584 has a CVSS score of 7.5 (HIGH) and an EPSS exploitation probability of 0.14%.

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HIGHPOC

CVE-2026-27584

CWE-306Published: February 24, 2026· Updated: Feb 26, 2026

7.5

CVSS v3.1

EPSS:0.14%probability of exploitation in 30 daysPercentile:33.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-27584 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

A proof-of-concept (PoC) exploit exists for CVE-2026-27584. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.