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CVE-2026-32723

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

Published: Mar 18, 2026Updated: Mar 19, 2026 Sources: CVE List NVD GHSACWE-362
NVD MITRE
4.7CVSSMEDIUM
EPSS Score
0.1%
Top 95.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-362

Affected Products

SandboxJSnyariv
On-prem
Security Products / vuln-mgmt-scanner
sandboxjsnyariv
On-prem
Security Products / vuln-mgmt-scanner
@nyariv/sandboxjsnpmOSS Libraries
nyarivindividual-devSecurity Productsaka sandboxjs
npmpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-7p5m-xrh7-769r
github.com
https://github.com/nyariv/SandboxJS/commit/cc8f20b4928afed5478d5ad3d1737ef2dcfaac29
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-32723
nvd.nist.gov
and 1 more references View all →

Timeline

Published
Mar 18, 2026
Last Updated
Mar 19, 2026

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