CVE-2026-32723

MEDIUM

4.7

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.35, SandboxJS timers have an execution-quota bypass. A global tick state (`currentTicks.current`) is shared between sandboxes. Timer string handlers are compiled at execution time using that global tick state rather than the scheduling sandbox's tick object. In multi-tenant / concurrent sandbox scenarios, another sandbox can overwrite `currentTicks.current` between scheduling and execution, causing the timer callback to run under a different sandbox's tick budget and bypass the original sandbox's execution quota/watchdog. Version 0.8.35 fixes this issue.

CVE Details

CVSS v3.1 Score4.7

SeverityMEDIUM

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

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published3/18/2026

Last Modified3/19/2026

Sourcenvd

Honeypot Sightings0

Affected Products

nyariv:sandboxjs

Weaknesses (CWE)

CWE-362

References

https://github.com/nyariv/SandboxJS/commit/cc8f20b4928afed5478d5ad3d1737ef2dcfaac29(security-advisories@github.com)

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-7p5m-xrh7-769r(security-advisories@github.com)

IOC Correlations

No correlations recorded

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