CVE-2026-44005

Summary

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

Affected Software

Weaknesses

• CWE-1321: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
• CWE-94: CWE-94: Improper Control of Generation of Code ('Code Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: total

Additional References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq

vm2: vm2: Sandbox Escape leading to Arbitrary Code Execution

Additional References

• https://access.redhat.com/security/cve/CVE-2026-44005
• https://bugzilla.redhat.com/show_bug.cgi?id=2477205
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json

References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq

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