CVE-2026-25587— SandboxJS has a Sandbox Escape
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I. Basic Information for CVE-2026-25587
Vulnerability Information
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Vulnerability Title
SandboxJS has a Sandbox Escape
Source: NVD (National Vulnerability Database)
Vulnerability Description
SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFE_PROTOYPES, it's prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. This vulnerability is fixed in 0.8.29.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
SandboxJS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SandboxJS是nyariv个人开发者的一个安全评估软件。 SandboxJS 0.8.29之前版本存在安全漏洞，该漏洞源于通过覆盖Map.prototype.has可导致沙箱逃逸。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
II. Public POCs for CVE-2026-25587
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Sandbox Escape · Advisory · nyariv/SandboxJS · GitHubx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-25587
Same Patch Batch · nyariv · 2026-02-06 · 4 CVEs total
| CVE-2026-25641 | 10.0 CRITICAL | SandboxJS has a sandbox escape via TOCTOU bug on keys in property accesses |
| CVE-2026-25520 | 10.0 CRITICAL | SandboxJS has a Sandbox Escape |
| CVE-2026-25586 | 10.0 CRITICAL | SandboxJS has a Sandbox Escape via Prototype Whitelist Bypass and Host Prototype Pollution |
IV. Related Vulnerabilities
Same product: SandboxJS
- CVE-2026-34217
SandboxJS has a Sandbox Escape via Prop Object Leak in New H - CVE-2026-34211
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SandboxJS: Sandbox integrity escape - CVE-2026-32723
SandboxJS timers have an execution-quota bypass (cross-sandb - CVE-2026-26954
SandboxJS has a Sandbox Escape
Same vendor: nyariv
- CVE-2026-34217
SandboxJS has a Sandbox Escape via Prop Object Leak in New H - CVE-2026-34211
SandboxJS: Stack overflow DoS via deeply nested expressions - CVE-2026-34208
SandboxJS: Sandbox integrity escape - CVE-2026-32723
SandboxJS timers have an execution-quota bypass (cross-sandb - CVE-2026-26954
SandboxJS has a Sandbox Escape
Same weakness: CWE-94
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V. Comments for CVE-2026-25587
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