SSRF via internal HTTP builtin exposure
Published Jun 12, 2026 · Updated Jun 12, 2026
Network restriction bypass in NodeVM before 3.11.4 allows remote attackers to access host-reachable services via sandboxed JavaScript. The wildcard builtin filter honors exclusions for public network modules but still exposes _http_client and _http_server, which issue requests and open sockets. Exploitation requires attacker-controlled code in NodeVM with wildcard builtins and public network modules excluded; it enables network access, not host code execution.
Summary
What happened
Network restriction bypass in NodeVM before 3.11.4 allows remote attackers to access host-reachable services via sandboxed JavaScript. The wildcard builtin filter honors exclusions for public network modules but still exposes _http_client and _http_server, which issue requests and open sockets. Exploitation requires attacker-controlled code in NodeVM with wildcard builtins and public network modules excluded; it enables network access, not host code execution.
The record
- CVE
- CVE-2026-47139
- Published
- Jun 12, 2026
- Updated
- Jun 12, 2026
- Vendor
- Patrik Simek
- Product
- vm2
- Classifications
- CWE-693, T1090.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 12, 2026CVE publishedPublication date reported by the CVE source.
- Jun 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 3.11.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- internal-http-builtin-network-bypass.jsproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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