vm2 has a sandbox escape via unblocked cross-realm Symbol.for keys + missing bridge write-trap symbol checks

Original summary

Normalized public record · Updated Oct 23, 2026

vm2 has a sandbox escape via unblocked cross-realm Symbol.for keys + missing bridge write-trap symbol checks

Publisher and source text is retained separately from QFinch interpretation.

Affected products

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

1. Confirm the affected product and reachable code path exist in your environment.
2. Apply the vendor-supported patch or mitigation from the primary advisory.
3. Rescan the exact deployed revision and retain verification evidence.

Evidence coverage

SSVC priority

MEDIUM

Confidence

10%

Aliases

GHSA-m5q2-4fm3-vfqp

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

1. Security advisory ↗
2. Patch commit ↗
3. Source repository ↗

Record history

Published Jun 12, 2026 · Last refreshed Oct 23, 2026