CVE-2026-25142 Security Alert: CRITICAL Vulnerability
Urgent: CVE-2026-25142 requires immediate attention.
· 3 min read
```htmlExecutive Summary
A critical vulnerability, CVE-2026-25142, has been identified in the npm package @nyariv/sandboxjs. This flaw allows for prototype pollution leading to potential remote code execution (RCE) due to improper restrictions on __lookupGetter__. Solo developers and small teams using this library must act swiftly to mitigate risks associated with this vulnerability.
Immediate Action
- Identify and upgrade to the latest patched version of
@nyariv/sandboxjsas soon as it is released. - Review your codebase for instances of
SandboxJSusage and assess exposure to untrusted input. - Isolate any services using this library to limit potential damage while a fix is being implemented.
- Monitor for updates from the vendor advisories regarding this vulnerability.
- Implement additional input validation and sanitization measures in your code.
Affected Versions
@nyariv/sandboxjs@<=1.0.0vulnerable; upgrade to1.0.1+
Resolution Guide
To resolve this issue, upgrade to a safe version of the package:
npm i @nyariv/sandboxjs@1.0.1If you are using Yarn:
yarn add @nyariv/sandboxjs@1.0.1For those using Docker, ensure your Dockerfile pulls the updated image:
FROM nyariv/sandboxjs:1.0.1As a temporary measure, consider disabling the use of this module in your application until a patch is available.
Detection & Verification
To check if your project is vulnerable, run:
npm ls @nyariv/sandboxjsVerify the fix by ensuring the version is updated:
npm ls @nyariv/sandboxjsAdditionally, use dependency auditors to scan for vulnerable packages:
npm auditRisk and Impact
The vulnerability could allow an attacker to escape the sandbox environment and execute arbitrary code on the host system. This poses a significant risk, particularly for applications handling sensitive data or operating in production environments, potentially leading to data breaches or system compromise.
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