CVE-2026-23830: SandboxJS has Sandbox Escape via Unprotected AsyncFunction Constructor

January 27, 2026 (updated January 29, 2026)

A sandbox escape vulnerability due to AsyncFunction not being isolated in SandboxFunction

References

github.com/advisories/GHSA-wxhw-j4hc-fmq6
github.com/nyariv/SandboxJS
github.com/nyariv/SandboxJS/commit/345aee6566e47979dee5c337b925b141e7f78ccd
github.com/nyariv/SandboxJS/security/advisories/GHSA-wxhw-j4hc-fmq6
nvd.nist.gov/vuln/detail/CVE-2026-23830

Code Behaviors & Features

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