by Kastro
Paper/Archive/CVE-2026-45411

CVE-2026-45411

patriksimek vm2 — vm2: Sandbox Breakout Using Async Generator

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 47.1.471 × 209.4Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.3, it is possible to catch a host exception using the yield* expression inside an async generator. When the generator is closed using the return function, the value is awaited on and exceptions thrown in the then call will be caught by the runtime and passed to the yield* iterator as the next value. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.3.

Affected

ProductAffectedFixed inSource
vm2< 3.11.3–CNA
Red Hat Ansible Automation Platform 2.1see advisory1785854226redhat-SADP
Red Hat Developer Hubsee advisory–redhat-SADP

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
redhat-SADP (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/patriksimek/vm2/security/advisories/GHSA-248r-7h7q-cr24refaccess.redhat.com/security/cve/CVE-2026-45411refbugzilla.redhat.com/show_bug.cgi?id=2477210refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45411.jsonadvisoryaccess.redhat.com/errata/RHSA-2026:50850