VDB
CVE-2026-47683
CVE-2026-47683
PUBLISHED
CVSS 8.7 HIGH
Reported by GitHub_M · Published August 17, 2026
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, the bufferAllocLimit enforcement in lib/setup-sandbox.js does not cover Buffer.concat(list, totalLength) or Buffer.from(arrayLike) with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory allocations that bypass the configured cap and can exhaust the host process. This issue is fixed in version 3.11.6.
Risk Scores
CVSS 4.0
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| patriksimek | vm2 | < 3.11.6 |
| npm | vm2 | 0 |
| patriksimek | vm2 | < 3.11.6, < 3.11.6 |
Timeline
- Aug 17, 2026 CVE Published
- Aug 18, 2026 Security Advisory
- Aug 22, 2026 Coalition ESS Score
- Aug 24, 2026 EPSS Score
- Aug 28, 2026 EPSS Score
- Sep 2, 2026 EPSS Score
- Sep 6, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 10, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-gmc2-2x9w-cgh9 x_refsource_CONFIRM
- https://github.com/patriksimek/vm2/commit/3ffb315512e634cf85c447375e85d6c83d00a4bd x_refsource_MISC
- https://github.com/patriksimek/vm2/releases/tag/3.11.6 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-47683 advisory
- https://github.com/advisories/GHSA-gmc2-2x9w-cgh9 advisory