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CVE-2021-21384

6.3 · MEDIUM

shescape is a simple shell escape package for JavaScript.

Published Mar 19, 2021CWE-88EPSS 0.58%

Overview

CVE-2021-21384 is a medium-severity vulnerability. It was published on March 19, 2021 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

shescape is a simple shell escape package for JavaScript. In shescape before version 1.1.3, anyone using _Shescape_ to defend against shell injection may still be vulnerable against shell injection if the attacker manages to insert a into the payload. For an example see the referenced GitHub Security Advisory. The problem has been patched in version 1.1.3. No further changes are required.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/ericcornelissen/shescape/commit/07a069a66423809cbedd61d980c11ca44a29ea2bGitHubgithub.com/ericcornelissen/shescape/releases/tag/v1.1.3GitHubgithub.com/ericcornelissen/shescape/security/advisories/GHSA-f2rp-38vg-j3ghRefwww.npmjs.com/package/shescapeGitHubgithub.com/ericcornelissen/shescape/commit/07a069a66423809cbedd61d980c11ca44a29ea2bGitHubgithub.com/ericcornelissen/shescape/releases/tag/v1.1.3GitHubgithub.com/ericcornelissen/shescape/security/advisories/GHSA-f2rp-38vg-j3ghRefwww.npmjs.com/package/shescape

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21384?

CVE-2021-21384 is a medium-severity vulnerability. It was published on March 19, 2021 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2021-21384?

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-21384?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-21384?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21384 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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