Sandbox escape in vm2 exception sanitization
CVE-2023-29199 is a critical sandbox escape vulnerability in the vm2 JavaScript/Node.js sandbox library affecting versions up to and including 3.9.15. The flaw exists in vm2's source code transformer, specifically its exception sanitization logic. An attacker can bypass the handleException() protection and cause unsanitized host exceptions to be exposed inside the sandboxed context. Because these exceptions originate from the host rather than the sandbox, they can be leveraged to break vm2's isolation boundary and execute arbitrary code in the host context.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously disclosed vm2 sandbox escape vulnerability referenced as part of a history of similar issues.
A critical vm2 JavaScript library sandbox escape vulnerability that can be exploited to bypass sandbox protections and achieve arbitrary code execution in the host context by raising an unsanitized host exception.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.