What is CVE-2026-92934?

CVE-2026-92934 is a critical-severity vulnerability in Patriksimek Vm2, classified under Protection Mechanism Failure. CVSS score: 9.0/10. Published 2026-09-17.

How severe is CVE-2026-92934?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Vulnerability in Patriksimek Vm2

CVE-2026-92934

vm2 before 3.11.8 contains an incomplete fix for Error.cause sanitization that allows sandbox escape when revisited host-wrapped AggregateError objects are caught within a single exception handler traversal. Attackers can exploit cycle detection bypass in handleException to access unsanitized host proxies embedded in the errors array, enabling full remote code execution and process information disclosure from the sandbox.

Published 2026-09-17 · last modified 2026-09-17.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.4th percentile), scored 2026-11-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Patriksimek Vm2

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

github.com/patriksimek/vm2/security/advisories/GHSA-x965-fc75-jpqh (vendor-advisory)
www.vulncheck.com/advisories/vm2-before-3.11.8-sandbox-escape-rce-via-aggregate… (third-party-advisory)

Frequently asked questions

What is CVE-2026-92934?: CVE-2026-92934 is a critical-severity vulnerability in Patriksimek Vm2, classified under Protection Mechanism Failure. CVSS score: 9.0/10. Published 2026-09-17.
How severe is CVE-2026-92934?: Critical severity. CVSS v3 base score is 9.0 out of 10.