Vulnerability in Patriksimek Vm2
CVE-2026-92940
vm2 versions 3.11.3 through 3.11.6 expose the host process's real https.globalAgent to sandboxed code when a NodeVM is explicitly configured to allow require('https'). The builtin loader wraps host modules in a read-only proxy, but method calls such as Agent.prototype.on() are forwarded to the underlying host object, so sandbox code can register a listener for the agent's 'free' event. When an unrelated host HTTPS request releases a pooled connection, the listener receives the live host request options and the host TLSSocket, allowing sandboxed code to read the host's Authorization header and private destination host/port, attach a data listener to the released socket and read subsequent host response bodies in plaintext, and issue attacker-chosen authenticated requests using the stolen credentials. The issue is fixed in 3.11.7.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.004 (36.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.004 · change: -0.000
Affected products
Weakness classification (CWE)
References
- github.com/patriksimek/vm2/security/advisories/GHSA-h85j-hv3c-qfgq (vendor-advisory)
- www.vulncheck.com/advisories/vm2-3.11.3-through-3.11.6-https-credential-exposur… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92940?
- CVE-2026-92940 is a critical-severity vulnerability in Patriksimek Vm2, classified under Exposure of Resource to Wrong Sphere. CVSS score: 10.0/10. Published 2026-09-17.
- How severe is CVE-2026-92940?
- Critical severity. CVSS v3 base score is 10.0 out of 10.