CVE-2026-45226 (GCVE-0-2026-45226)

Vulnerability from cvelistv5 – Published: 2026-05-12 21:17 – Updated: 2026-11-08 14:03 X_Open Source
VLAI
Title
Heym < 0.0.21 Authorization Bypass in Workflow Execution
Summary
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.
Severity
7.6 (High)
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
7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 15:04 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 8184 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
heymrun heym Affected: 0 , < 0.0.21 (semver)
Unaffected: 3ae3ef6a7d3609da0e910f9ed6b81e99a1661ac8 (git)
guessed Create a notification for this product.
Date Public
2026-05-09 00:00
Credits
Chia Min Jun Lennon
Show details on NVD website
To clipboard 

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