Vulnerability Details CVE-2026-43898
SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller, allowing sandboxed code to recover the internal LispType.Call runtime callback. That callback can then be invoked with attacker-controlled fake context and obj values to extract blocked host statics, recover the real host Function constructor, and execute arbitrary host JavaScript. This vulnerability is fixed in 0.9.6.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 19.4%
CVSS Severity
CVSS v3 Score 10.0
References
Products affected by CVE-2026-43898
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cpe:2.3:a:nyariv:sandboxjs:0.1.0
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cpe:2.3:a:nyariv:sandboxjs:0.1.1
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cpe:2.3:a:nyariv:sandboxjs:0.2.0
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cpe:2.3:a:nyariv:sandboxjs:0.2.1
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cpe:2.3:a:nyariv:sandboxjs:0.2.2
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cpe:2.3:a:nyariv:sandboxjs:0.2.3
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cpe:2.3:a:nyariv:sandboxjs:0.3.0
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cpe:2.3:a:nyariv:sandboxjs:0.3.1
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cpe:2.3:a:nyariv:sandboxjs:0.3.10
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cpe:2.3:a:nyariv:sandboxjs:0.3.11
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cpe:2.3:a:nyariv:sandboxjs:0.3.12
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cpe:2.3:a:nyariv:sandboxjs:0.3.13
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cpe:2.3:a:nyariv:sandboxjs:0.3.14
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cpe:2.3:a:nyariv:sandboxjs:0.3.15
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cpe:2.3:a:nyariv:sandboxjs:0.3.16
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cpe:2.3:a:nyariv:sandboxjs:0.3.17
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cpe:2.3:a:nyariv:sandboxjs:0.3.18
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cpe:2.3:a:nyariv:sandboxjs:0.3.2
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cpe:2.3:a:nyariv:sandboxjs:0.3.3
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cpe:2.3:a:nyariv:sandboxjs:0.3.4
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cpe:2.3:a:nyariv:sandboxjs:0.3.5
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cpe:2.3:a:nyariv:sandboxjs:0.3.6
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cpe:2.3:a:nyariv:sandboxjs:0.3.7
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cpe:2.3:a:nyariv:sandboxjs:0.3.8
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cpe:2.3:a:nyariv:sandboxjs:0.3.9
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cpe:2.3:a:nyariv:sandboxjs:0.4.0
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cpe:2.3:a:nyariv:sandboxjs:0.5.0
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cpe:2.3:a:nyariv:sandboxjs:0.5.2
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cpe:2.3:a:nyariv:sandboxjs:0.5.3
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cpe:2.3:a:nyariv:sandboxjs:0.6.0
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cpe:2.3:a:nyariv:sandboxjs:0.6.1
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cpe:2.3:a:nyariv:sandboxjs:0.6.2
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cpe:2.3:a:nyariv:sandboxjs:0.7.0
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cpe:2.3:a:nyariv:sandboxjs:0.7.1
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cpe:2.3:a:nyariv:sandboxjs:0.8.0
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cpe:2.3:a:nyariv:sandboxjs:0.8.1
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cpe:2.3:a:nyariv:sandboxjs:0.8.10
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cpe:2.3:a:nyariv:sandboxjs:0.8.11
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cpe:2.3:a:nyariv:sandboxjs:0.8.12
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cpe:2.3:a:nyariv:sandboxjs:0.8.14
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cpe:2.3:a:nyariv:sandboxjs:0.8.15
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cpe:2.3:a:nyariv:sandboxjs:0.8.15.1
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cpe:2.3:a:nyariv:sandboxjs:0.8.16
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cpe:2.3:a:nyariv:sandboxjs:0.8.17
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cpe:2.3:a:nyariv:sandboxjs:0.8.18
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cpe:2.3:a:nyariv:sandboxjs:0.8.19
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cpe:2.3:a:nyariv:sandboxjs:0.8.2
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cpe:2.3:a:nyariv:sandboxjs:0.8.20
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cpe:2.3:a:nyariv:sandboxjs:0.8.21
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cpe:2.3:a:nyariv:sandboxjs:0.8.22
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cpe:2.3:a:nyariv:sandboxjs:0.8.23
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cpe:2.3:a:nyariv:sandboxjs:0.8.23-1
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cpe:2.3:a:nyariv:sandboxjs:0.8.23.2
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cpe:2.3:a:nyariv:sandboxjs:0.8.23.3
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cpe:2.3:a:nyariv:sandboxjs:0.8.24
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cpe:2.3:a:nyariv:sandboxjs:0.8.24-1
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cpe:2.3:a:nyariv:sandboxjs:0.8.24-2
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cpe:2.3:a:nyariv:sandboxjs:0.8.25
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cpe:2.3:a:nyariv:sandboxjs:0.8.26
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cpe:2.3:a:nyariv:sandboxjs:0.8.27
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cpe:2.3:a:nyariv:sandboxjs:0.8.28
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cpe:2.3:a:nyariv:sandboxjs:0.8.29
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cpe:2.3:a:nyariv:sandboxjs:0.8.3
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cpe:2.3:a:nyariv:sandboxjs:0.8.30
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cpe:2.3:a:nyariv:sandboxjs:0.8.31
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cpe:2.3:a:nyariv:sandboxjs:0.8.4
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cpe:2.3:a:nyariv:sandboxjs:0.8.5
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cpe:2.3:a:nyariv:sandboxjs:0.8.6
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cpe:2.3:a:nyariv:sandboxjs:0.8.7
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cpe:2.3:a:nyariv:sandboxjs:0.8.8
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cpe:2.3:a:nyariv:sandboxjs:0.8.9