Critical

Sandbox Breakout / Arbitrary Code Execution in sandbox

  • Disclosed: 04.09.2020
  • Updated: 11.10.2026 10:22

All versions of sandbox are vulnerable to Sandbox Escape leading to Remote Code Execution. The package fails to restrict access to the main context through this.constructor.constructor . This may allow attackers to execute arbitrary code in the system. Evaluating the payload this.constructor.constructor('return process.env')() prints the contents of process.env.

Recommendation

No fix is currently available. Consider using an alternative package until a fix is made available.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package sandbox >= 0.0.0 no fix

References

CVSS score -
Weakness (CWE)
-
Platform
npm
Package
sandbox
Disclosed
04.09.2020
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-gc25-3vc5-2jf9 - CC BY 4.0

Vulnerability history: sandbox

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
09.2020 09.2020
Without a fix
2
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • Medium 1

Disclosures per year

  1. 2020: 2
  2. 2021: 0
  3. 2022: 0
  4. 2023: 0
  5. 2024: 0
  6. 2025: 0
  7. 2026: 0
  1. Sandbox Breakout / Arbitrary Code Execution in sandbox this entry
    Critical ghsa-gc25-3vc5-2jf9 >= 0.0.0 no fix
  2. Medium ghsa-fm4j-4xhm-xpwx >= 0.0.0 no fix

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