CVE-2026-45226: high-severity vulnerability in heymrun heym
Heym < 0.0.21 Authorization Bypass in Workflow Execution
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.6epss 0.3%
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.
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Affected products
heymrun · heymRelated CVEs — heymrun heym
In the same product, most dangerous first.
CVE-2026-100864HIGHheym before 0.0.91 Remote Code Execution via Expression EngineEPSS 0.9%CVE-2026-55376HIGHheym Python Tool Sandbox EscapeEPSS 0.5%CVE-2026-100865HIGHHeym before 0.0.53 Remote Code Execution via eval() Sandbox EscapeEPSS 0.4%CVE-2026-101050HIGHHeym before 0.0.53 Authentication Bypass via Telegram WebhookEPSS 0.4%CVE-2026-101049HIGHHeym before 0.0.53 Slack Webhook Signature Verification BypassEPSS 0.4%CVE-2026-45225HIGHHeym < 0.0.21 Path Traversal File Upload via upload_file()EPSS 0.4%