Detections
Analytics

Echo: vm2: security update to 3.11.8

high Tenable Cloud Security Plugin ID 473550

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-92959)

Solution

Update the vm2 library and its related packages to version 3.11.8 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-92959

Plugin Details

Severity: High

ID: 473550

Version: Revision 1.1

Type: Local

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.45

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:C

CVSS Score Source: CVE-2026-92959

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 5

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 9/17/2026

Reference Information

CVE: CVE-2026-92959