Review reviewCritical

CVE-2026-45411

patriksimek vm2, Red Hat Developer Hub, Self-service automation portal 2

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.3, it is possible to catch a host exception using the yield* expression inside an async generator. When the generator is closed using the return function, the value is awaited on and exceptions thrown in the then call will be caught by the runtime and passed to the yield* iterator as the next value. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.3.

CVSS: 9.8
EPSS: 0.57%
CISA KEV: Not listed
Published: 2026.05.14

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.57%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: patriksimek vm2, Red Hat Developer Hub, Self-service automation portal 2
Affected versions: >= < 3.11.3, < 3.11.3
Fixed versions: 3.11.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that patriksimek vm2, Red Hat Developer Hub, Self-service automation portal 2 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-237, CWE-668