Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2021-21267

7.5 · HIGH

Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector).

Published Mar 19, 2021CWE-20EPSS 2.09%

Overview

CVE-2021-21267 is a high-severity vulnerability. It was published on March 19, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector). In before version 2.0.0, email address validation is vulnerable to a denial-of-service attack where some input (for example `a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.`) will freeze the program or web browser page executing the code. This affects any current schema-inspector users using any version to validate email addresses. Users who do not do email validation, and instead do other types of validation (like string min or max length, etc), are not affected. Users should upgrade to version 2.0.0, which uses a regex expression that isn't vulnerable to ReDoS.

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

GitHubgist.github.com/mattwelke/b7f42424680a57b8161794ad1737cd8fGitHubgithub.com/schema-inspector/schema-inspector/security/advisories/GHSA-f38p-c2gq-4pmrRefsecurity.netapp.com/advisory/ntap-20210528-0006/Refwww.npmjs.com/package/schema-inspectorGitHubgist.github.com/mattwelke/b7f42424680a57b8161794ad1737cd8fGitHubgithub.com/schema-inspector/schema-inspector/security/advisories/GHSA-f38p-c2gq-4pmrRefsecurity.netapp.com/advisory/ntap-20210528-0006/Refwww.npmjs.com/package/schema-inspector

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21267?

CVE-2021-21267 is a high-severity vulnerability. It was published on March 19, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-21267?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-21267?

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-2021-21267?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21267 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.

Related HIGH CVEs from 2021

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999