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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7p5m-xrh7-769r SandboxJS has an execution-quota bypass (cross-sandbox currentTicks race) in SandboxJS timers
Fixes

Solution

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Workaround

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History

Wed, 18 Mar 2026 21:30:00 +0000

Type Values Removed Values Added
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.
Title SandboxJS timers have an execution-quota bypass (cross-sandbox currentTicks race)
Weaknesses CWE-362
References
Metrics cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-18T21:27:35.349Z

Reserved: 2026-03-13T15:02:00.625Z

Link: CVE-2026-32723

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-18T22:16:24.827

Modified: 2026-03-18T22:16:24.827

Link: CVE-2026-32723

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses