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Isolated-vm Flaw Lets Sandboxed JavaScript Escape to Host for Potential RCE

lowthehackernewsPublished 2026-08-20

Cybersecurity researchers have disclosed a critical security flaw in isolated-vm, a popular open-source sandbox with more than 2,900 stars and 190 forks on GitHub, that could allow attackers to escape the confines of the isolated environment.

The vulnerability ("GHSA-864f-rcv7-6rh4"), which has yet to be assigned a CVE identifier, impacts all versions of the library before and including 7.0.0.

MITRE ATT&CK techniques

Original source: https://thehackernews.com/2026/08/isolated-vm-flaw-lets-sandboxed.html