Is CVE-2026-45226 actively exploited?

No active exploitation of CVE-2026-45226 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45226 be exploited remotely?

Yes. CVE-2026-45226 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45226?

CVE-2026-45226 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-45226

CWE-863Published: May 12, 2026· Updated: May 13, 2026

7.1

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:16.2th

Official Description

Heym before 0.0.21 contains an authorization bypass vulnerability in workflow execution that allows authenticated users to execute arbitrary workflows by referencing victim workflow UUIDs without proper access validation. Attackers can create workflows with execute nodes or agent subWorkflowIds pointing to victim workflow UUIDs to load and execute those workflows under attacker-controlled execution paths, exposing victim workflow outputs and triggering workflow nodes with unintended side effects.

NVD Source

Technical Analysis

CVE-2026-45226 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.1.