Bug 2488396 (CVE-2026-47135) - CVE-2026-47135 vm2: vm2: Sandbox escape allows arbitrary code execution on the host system
Summary: CVE-2026-47135 vm2: vm2: Sandbox escape allows arbitrary code execution on th...
Keywords:
Status: NEW
Alias: CVE-2026-47135
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-12 15:02 UTC by OSIDB Bzimport
Modified: 2026-06-23 08:43 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-12 15:02:25 UTC 
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, Symbol.for override in setup-sandbox.js only intercepts 2 of 9 dangerous Node.js cross-realm symbols. Combined with the bridge's set/defineProperty/deleteProperty traps having no isDangerousCrossRealmSymbol key check, sandbox code can obtain real cross-realm symbols, write them to host objects, and control host-side behavior — verified with a full util.promisify hijack chain. This issue has been patched in version 3.11.4.
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