Review reviewHigh

CVE-2026-44001

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

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, a sandbox escape vulnerability in vm2 v3.10.5 allows any sandboxed code to crash the host Node.js process via a single Promise constructor that triggers an unhandled rejection propagating to the host. The fix for CVE-2026-22709 (v3.10.2) only sanitized the onRejected callback in .then() and .catch() overrides and did not address the executor-to-unhandledRejection path. This vulnerability is fixed in 3.11.0.

CVSS: 8.6
EPSS: 0.45%
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 probability0.45%

Technical severityCVSS 8.6

Vulnerability overview

Affected product and versions

Product: patriksimek vm2, Red Hat Developer Hub, Self-service automation portal 2
Affected versions: >= < 3.11.0, < 3.11.0
Fixed versions: 3.11.0

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:C/C:N/I:N/A:H
CWE: CWE-248