GHSA-6jg8-7333-554w

Sandbox Breakout in realms-shim

Published 4 Oct 2019Modified 2 Sep 2021

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by GHSA.

Description

Versions of `realms-shim` prior to 1.2.0 are vulnerable to a Sandbox Breakout. `Reflect.construct` can be used on the sandboxed Function constructor to reach the prototypes of the primal Realm, which may allow an attacker to escape the sandbox and execute arbitrary code. ## Recommendation Upgrade to version 1.2.0 or later.

Affected packages and fixed versions

Source	Package	Fixed in
npm::GitHub Security Advisory npm	realms-shim, ses	1.2.0 and 1 more

Show all 2 entries from 1 source

Source	Package	Fixed in
npm::GitHub Security Advisory npm	realms-shim	1.2.0
npm::GitHub Security Advisory npm	ses	0.6.3

References

All 9 references

https://www.npmjs.com/advisories/1191

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.