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    CVE-2026-25142

    SandboxJS is a JavaScript sandboxing library. Prior to 0.8.27, SanboxJS does not properly restrict __lookupGetter__ which can be used to obtain prototypes, which can be used for escaping the sandbox / remote code execution. This vulnerability is fixed in 0.8.27.

    Published:Feb 2, 2026
    Last Modified:Apr 18, 2026
    EPS:Feb 2, 2026
    EPSS Score:0.0022
    CVSS Score:10

    Affected Products

    Vendor
    Nyariv
    Product
    Sandboxjs

    Exploits

    https://github.com/nyariv/SandboxJS/security/advisories/GHSA-9p4w-fq8m-2hp7

    Related CVEs

    CVE-2026-43898 (CVSS 10) — SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller…
    CVE-2026-34217 (CVSS 6.9) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, a scope modification vulnerability exists in @n…
    CVE-2026-34211 (CVSS 6.9) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, the @nyariv/sandboxjs parser contains unbounded…
    CVE-2026-34208 (CVSS 10) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, SandboxJS blocks direct assignment to global ob…
    CVE-2026-32723 (CVSS 4.8) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.35, SandboxJS timers have an execution-quota bypass…
    CVE-2026-26954 (CVSS 10) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Func…
    CVE-2026-25881 (CVSS 9) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.31, a sandbox escape vulnerability allows sandboxed…
    CVE-2026-25586 (CVSS 10) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOw…
    CVE-2026-25520 (CVSS 10) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. …
    CVE-2026-25587 (CVSS 10) — SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFE_PROTOYPES, it's prototype can…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
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    Changed
    Confidentiality
    None
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    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High