CVE-2026-92959

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Source
https://cve.org/CVERecord?id=CVE-2026-92959
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92959.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-92959
Aliases
  • GHSA-f8gf-w286-fmq2
Published
2026-09-17T13:46:16Z
Modified
2026-09-19T03:46:46Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
vm2 before 3.11.8 allowAsync Bypass via Promise Thenable
Details

vm2 before 3.11.8 does not fully enforce the allowAsync: false option in VM and NodeVM. While localPromise.prototype.then is replaced with a handler that throws 'Async not available', the sandbox's Promise static methods (Promise.resolve, Promise.all, Promise.race, Promise.any, and Promise.allSettled) still assimilate attacker-supplied thenables: native promise resolution performs PromiseResolveThenableJob and invokes the sandboxed code's then method in a microtask without passing through the patched then, so the async restriction is never applied. As a result, sandboxed script can schedule work that runs after VM.run() or NodeVM.run() has returned and outside the configured timeout, continuing to execute after the host believes execution is complete.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-693"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92959.json"
}
References

Affected packages

Git / github.com/patriksimek/vm2

Affected ranges

Type
GIT
Repo
https://github.com/patriksimek/vm2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
525961bf631b4a5a776e1eb620bcadad4438b130
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.11.8"
        },
        {
            "introduced": "vm2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

3.*
3.11.6
3.9.10
3.9.11
3.9.12
3.9.13
3.9.14
3.9.15
3.9.16
3.9.17
3.9.18
3.9.19
3.9.3
3.9.4
3.9.5
3.9.6
3.9.7
3.9.8
3.9.9
v3.*
v3.10.0
v3.10.1
v3.10.2
v3.10.3
v3.10.4
v3.10.5
v3.11.0
v3.11.1
v3.11.2
v3.11.3
v3.11.4
v3.11.5
v3.11.7
v3.9.0
v3.9.1
v3.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92959.json"