Medium 4.8Published Mar 18, 2026

CVE-2026-32723SandboxJS timers have an execution-quota bypass (cross-sandbox currentTicks race)

Updated under an hour ago (Oct 27, 2026, 8:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for nyariv SandboxJS

Exploited in the last 30 days

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.

CVSS: 4.8 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-362
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nyariv SandboxJS nyariv:sandboxjs (from the name)	before 0.8.35	CNA record
nyariv sandboxjs nyariv:sandboxjs	before 0.8.35	NVD

References

References

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-7p5m-xrh7-769r	x-refsource-confirm, exploit, vendor-advisory
https://github.com/nyariv/SandboxJS/commit/cc8f20b4928afed5478d5ad3d1737ef2dcfaac29	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.