What is CVE-2024-21485?

CVE-2024-21485 is a medium-severity cross-site scripting (XSS) vulnerability in dash-core-components (npm), affecting versions < 2.13.0. It is fixed in 2.13.0, 2.15.0, 2.0.16, 2.0.0. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.

How severe is CVE-2024-21485?

CVE-2024-21485 has a CVSS score of 6.5 (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 packages are affected by CVE-2024-21485?

dash-core-components (npm) versions < 2.13.0; dash (pip) versions < 2.15.0; dash-html-components (npm) versions < 2.0.16.

Is there a fix for CVE-2024-21485?

Yes. CVE-2024-21485 is fixed in 2.13.0, 2.15.0, 2.0.16, 2.0.0. Upgrade to this version or later.

Is CVE-2024-21485 exploitable, and should I be worried?

Whether CVE-2024-21485 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-2024-21485 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-2024-21485 in dash-core-components

Q: How severe is CVE-2024-21485?

CVE-2024-21485 has a CVSS score of 6.5 (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 packages are affected by CVE-2024-21485?

dash-core-components (npm) versions < 2.13.0; dash (pip) versions < 2.15.0; dash-html-components (npm) versions < 2.0.16.

Q: Is there a fix for CVE-2024-21485?

Yes. CVE-2024-21485 is fixed in 2.13.0, 2.15.0, 2.0.16, 2.0.0. Upgrade to this version or later.

Q: Is CVE-2024-21485 exploitable, and should I be worried?

Whether CVE-2024-21485 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-2024-21485 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-2024-21485?

Upgrade: dash-core-components to 2.13.0 or later, dash to 2.15.0 or later, dash-html-components to 2.0.16 or later, dash-html-components to 2.0.0 or later, dash-core-components to 2.0.0 or later.

Summary

Dash apps vulnerable to Cross-site Scripting

Versions of the package dash-core-components before 2.13.0; versions of the package dash-core-components before 2.0.0; versions of the package dash before 2.15.0; versions of the package dash-html-components before 2.0.0; versions of the package dash-html-components before 2.0.16 are vulnerable to Cross-site Scripting (XSS) when the href of the a tag is controlled by an adversary. An authenticated attacker who stores a view that exploits this vulnerability could steal the data that's visible to another user who opens that view - not just the data already included on the page, but they could also, in theory, make additional requests and access other data accessible to this user. In some cases, they could also steal the access tokens of that user, which would allow the attacker to act as that user, including viewing other apps and resources hosted on the same server.

Note:

This is only exploitable in Dash apps that include some mechanism to store user input to be reloaded by a different user.

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-2024-21485 has a CVSS score of 6.5 (Medium). The vector is network-reachable, low 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 (2.13.0, 2.15.0, 2.0.16, 2.0.0); upgrading removes the vulnerable code path.

Affected versions

dash-core-components (< 2.13.0) dash (< 2.15.0) dash-html-components (< 2.0.16) dash-html-components (< 2.0.0) dash-core-components (< 2.0.0)

Security releases

dash-core-components → 2.13.0 (npm) dash → 2.15.0 (pip) dash-html-components → 2.0.16 (npm) dash-html-components → 2.0.0 (pip) dash-core-components → 2.0.0 (pip)

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 the following packages to resolve this vulnerability:

dash-core-components to 2.13.0 or later; dash to 2.15.0 or later; dash-html-components to 2.0.16 or later; dash-html-components to 2.0.0 or later; dash-core-components to 2.0.0 or later

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

Frequently Asked Questions

What is CVE-2024-21485? CVE-2024-21485 is a medium-severity cross-site scripting (XSS) vulnerability in dash-core-components (npm), affecting versions < 2.13.0. It is fixed in 2.13.0, 2.15.0, 2.0.16, 2.0.0. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
How severe is CVE-2024-21485? CVE-2024-21485 has a CVSS score of 6.5 (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 packages are affected by CVE-2024-21485?
- dash-core-components (npm) (versions < 2.13.0)
- dash (pip) (versions < 2.15.0)
- dash-html-components (npm) (versions < 2.0.16)
Is there a fix for CVE-2024-21485? Yes. CVE-2024-21485 is fixed in 2.13.0, 2.15.0, 2.0.16, 2.0.0. Upgrade to this version or later.
Is CVE-2024-21485 exploitable, and should I be worried? Whether CVE-2024-21485 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-2024-21485 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-2024-21485?
- Upgrade dash-core-components to 2.13.0 or later
- Upgrade dash to 2.15.0 or later
- Upgrade dash-html-components to 2.0.16 or later
- Upgrade dash-html-components to 2.0.0 or later
- Upgrade dash-core-components to 2.0.0 or later