What is CVE-2023-26136?

CVE-2023-26136 is a critical security vulnerability affecting the tough-cookie package in Node.js applications. This issue, known as Prototype Pollution, occurs when using CookieJar in rejectPublicSuffixes=false mode and can lead to unintended consequences and security risks.

Who is impacted by this?

Affected versions include all versions up to 4.1.2, as well as the node-tough-cookie package prior to version 2.3.4+dfsg-1+deb10u1 for Debian 10 buster. This security issue, known as Prototype Pollution, can lead to unintended consequences and security risks for a wide range of systems, including web applications and server-side software.

What should I do if I’m affected?

If you're affected by the CVE-2023-26136 vulnerability, it's important to take action to protect your systems. Here's a simple step-by-step guide:

1. Identify if your Node.js application uses the tough-cookie package with versions up to 4.1.2.

2. Upgrade to version 4.1.3 or later of the tough-cookie package to mitigate the risk.

3. For Debian 10 buster users, update the node-tough-cookie package to version 2.3.4+dfsg-1+deb10u1.

4. Monitor security advisories and updates for any future patches or recommendations.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2023-26136 vulnerability, also known as Prototype Pollution, is not listed in CISA's Known Exploited Vulnerabilities Catalog. To address this issue, it is recommended to update the tough-cookie package to version 4.1.3 or later, or implement suggested fixes for affected systems.

Weakness Enumeration

The weakness enumeration for this vulnerability is categorized as CWE-1321, which involves improper control of object prototype attributes, also known as 'Prototype Pollution'.

Learn More

For a comprehensive understanding of this vulnerability, consult the NVD page and the sources listed below.

• GitHub Issue: Security Risk

• Debian LTS Security Update