vm2: Sandbox Escape via Promise Constructor Unhandled Rejection (Process Crash DoS)
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.4%
exploitation probability
0.4%top 63% of all CVEs
observed exploitation
nono source reports it
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, a sandbox escape vulnerability in vm2 v3.10.5 allows any sandboxed code to crash the host Node.js process via a single Promise constructor that triggers an unhandled rejection propagating to the host. The fix for CVE-2026-22709 (v3.10.2) only sanitized the onRejected callback in .then() and .catch() overrides and did not address the executor-to-unhandledRejection path. This vulnerability is fixed in 3.11.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected products
patriksimek · vm2References
https://access.redhat.com/errata/RHSA-2026:50850https://access.redhat.com/security/cve/CVE-2026-44001https://bugzilla.redhat.com/show_bug.cgi?id=2477208https://github.com/patriksimek/vm2/security/advisories/GHSA-hw58-p9xv-2mjhhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44001.json