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CVE-2022-24999

7.5 · HIGH

qs before 6.10.3, as used in Express before 4.17.3 and other products, allows attackers to cause a Node process hang for an Express application because an __ proto__ key can be used.

Published Nov 26, 2022CWE-1321EPSS 15.62%

Overview

CVE-2022-24999 is a high-severity vulnerability. It was published on November 26, 2022 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

qs before 6.10.3, as used in Express before 4.17.3 and other products, allows attackers to cause a Node process hang for an Express application because an __ proto__ key can be used. In many typical Express use cases, an unauthenticated remote attacker can place the attack payload in the query string of the URL that is used to visit the application, such as a[__proto__]=b&a[__proto__]&a[length]=100000000. The fix was backported to qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3, and 6.2.4 (and therefore Express 4.17.3, which has "deps: [email protected]" in its release description, is not vulnerable).

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/expressjs/express/releases/tag/4.17.3GitHubgithub.com/ljharb/qs/pull/428GitHubgithub.com/n8tz/CVE-2022-24999Reflists.debian.org/debian-lts-announce/2023/01/msg00039.htmlRefsecurity.netapp.com/advisory/ntap-20230908-0005/GitHubgithub.com/expressjs/express/releases/tag/4.17.3GitHubgithub.com/ljharb/qs/pull/428GitHubgithub.com/n8tz/CVE-2022-24999Reflists.debian.org/debian-lts-announce/2023/01/msg00039.htmlRefsecurity.netapp.com/advisory/ntap-20230908-0005/

How CyberStrike helps

Frequently asked questions

What is CVE-2022-24999?

CVE-2022-24999 is a high-severity vulnerability. It was published on November 26, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2022-24999?

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-2022-24999?

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-2022-24999?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-24999 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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