What is CVE-2023-41167?

CVE-2023-41167 is a medium-severity cross-site scripting (XSS) vulnerability in @webiny/react-rich-text-renderer (npm), affecting versions <= 5.37.1. It is fixed in 5.37.2. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.

How severe is CVE-2023-41167?

CVE-2023-41167 has a CVSS score of 4.8 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of @webiny/react-rich-text-renderer are affected by CVE-2023-41167?

@webiny/react-rich-text-renderer (npm) versions <= 5.37.1 is affected.

Is there a fix for CVE-2023-41167?

Yes. CVE-2023-41167 is fixed in 5.37.2. Upgrade to this version or later.

Is CVE-2023-41167 exploitable, and should I be worried?

Whether CVE-2023-41167 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2023-41167 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2023-41167 in @webiny/react-rich-text-renderer

Q: How severe is CVE-2023-41167?

CVE-2023-41167 has a CVSS score of 4.8 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of @webiny/react-rich-text-renderer are affected by CVE-2023-41167?

@webiny/react-rich-text-renderer (npm) versions <= 5.37.1 is affected.

Q: Is there a fix for CVE-2023-41167?

Yes. CVE-2023-41167 is fixed in 5.37.2. Upgrade to this version or later.

Q: Is CVE-2023-41167 exploitable, and should I be worried?

Whether CVE-2023-41167 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2023-41167 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2023-41167?

Upgrade @webiny/react-rich-text-renderer to 5.37.2 or later.

Summary

@webiny/react-rich-text-renderer vulnerable to insecure rendering of rich text content

Overview

@webiny/react-rich-text-renderer is a react component to render data coming from Webiny Headless CMS and Webiny Form Builder. The @webiny/react-rich-text-renderer package depends on the editor.js rich text editor to handle rich text content. The CMS stores rich text content from the editor.js into the database. When the @webiny/react-rich-text-renderer is used to render such content, it uses the dangerouslySetInnerHTML prop, without applying HTML sanitization. The issue arises when an actor, who in this context would specifically be a content manager with access to the CMS, inserts a malicious script as part of the user-defined input. This script is then injected and executed within the user's browser when the main page or admin page loads.

Am I affected?

You will be affected if you're running a Webiny project created prior to 5.35.0 and you're using the legacy rich text editor (which uses editor.js library under the hood). If you've already switched to using the new rich text editor, powered by Lexical editor, you will not be affected by this.

How do I patch this vulnerability?

Update to Webiny version 5.37.2.

Impact

Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.

CVE-2023-41167 has a CVSS score of 4.8 (Medium). The vector is network-reachable, high privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (5.37.2); upgrading removes the vulnerable code path.

Affected versions

@webiny/react-rich-text-renderer (<= 5.37.1)

Security releases

@webiny/react-rich-text-renderer → 5.37.2 (npm)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade @webiny/react-rich-text-renderer to 5.37.2 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2023-41167? CVE-2023-41167 is a medium-severity cross-site scripting (XSS) vulnerability in @webiny/react-rich-text-renderer (npm), affecting versions <= 5.37.1. It is fixed in 5.37.2. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
How severe is CVE-2023-41167? CVE-2023-41167 has a CVSS score of 4.8 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of @webiny/react-rich-text-renderer are affected by CVE-2023-41167? @webiny/react-rich-text-renderer (npm) versions <= 5.37.1 is affected.
Is there a fix for CVE-2023-41167? Yes. CVE-2023-41167 is fixed in 5.37.2. Upgrade to this version or later.
Is CVE-2023-41167 exploitable, and should I be worried? Whether CVE-2023-41167 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2023-41167 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2023-41167? Upgrade @webiny/react-rich-text-renderer to 5.37.2 or later.