What is CVE-2021-33605?

CVE-2021-33605 is a medium-severity security vulnerability in com.vaadin:vaadin-checkbox-flow (maven), affecting versions >= 12.0.0, < 14.6.8. It is fixed in 14.6.8, 20.0.6.

How severe is CVE-2021-33605?

CVE-2021-33605 has a CVSS score of 4.3 (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 com.vaadin:vaadin-checkbox-flow are affected by CVE-2021-33605?

com.vaadin:vaadin-checkbox-flow (maven) versions >= 12.0.0, < 14.6.8 is affected.

Is there a fix for CVE-2021-33605?

Yes. CVE-2021-33605 is fixed in 14.6.8, 20.0.6. Upgrade to this version or later.

Is CVE-2021-33605 exploitable, and should I be worried?

Whether CVE-2021-33605 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-2021-33605 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-2021-33605 in com.vaadin:vaadin-checkbox-flow

Q: How severe is CVE-2021-33605?

CVE-2021-33605 has a CVSS score of 4.3 (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 com.vaadin:vaadin-checkbox-flow are affected by CVE-2021-33605?

com.vaadin:vaadin-checkbox-flow (maven) versions >= 12.0.0, < 14.6.8 is affected.

Q: Is there a fix for CVE-2021-33605?

Yes. CVE-2021-33605 is fixed in 14.6.8, 20.0.6. Upgrade to this version or later.

Q: Is CVE-2021-33605 exploitable, and should I be worried?

Whether CVE-2021-33605 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-2021-33605 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-2021-33605?

Upgrade: com.vaadin:vaadin-checkbox-flow to 14.6.8 or later, com.vaadin:vaadin-checkbox-flow to 20.0.6 or later.

Summary

Unauthorized property update in CheckboxGroup component in Vaadin 12-14 and 15-20

Improper check in CheckboxGroup in com.vaadin:vaadin-checkbox-flow versions 1.2.0 prior to 2.0.0 (Vaadin 12.0.0 prior to 14.0.0), 2.0.0 prior to 3.0.0 (Vaadin 14.0.0 prior to 14.5.0), 3.0.0 through 4.0.1 (Vaadin 15.0.0 through 17.0.11), 14.5.0 through 14.6.7 (Vaadin 14.5.0 through 14.6.7), and 18.0.0 through 20.0.5 (Vaadin 18.0.0 through 20.0.5) allows attackers to modify the value of a disabled Checkbox inside enabled CheckboxGroup component via unspecified vectors.

https://vaadin.com/security/cve-2021-33605

Impact

CVE-2021-33605 has a CVSS score of 4.3 (Medium). The vector is network-reachable, low privileges required, and no user interaction. 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 (14.6.8, 20.0.6); upgrading removes the vulnerable code path.

Affected versions

com.vaadin:vaadin-checkbox-flow (>= 12.0.0, < 14.6.8) com.vaadin:vaadin-checkbox-flow (>= 15.0.0, < 20.0.6)

Security releases

com.vaadin:vaadin-checkbox-flow → 14.6.8 (maven) com.vaadin:vaadin-checkbox-flow → 20.0.6 (maven)

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:

com.vaadin:vaadin-checkbox-flow to 14.6.8 or later; com.vaadin:vaadin-checkbox-flow to 20.0.6 or later

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

Frequently Asked Questions

What is CVE-2021-33605? CVE-2021-33605 is a medium-severity security vulnerability in com.vaadin:vaadin-checkbox-flow (maven), affecting versions >= 12.0.0, < 14.6.8. It is fixed in 14.6.8, 20.0.6.
How severe is CVE-2021-33605? CVE-2021-33605 has a CVSS score of 4.3 (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 com.vaadin:vaadin-checkbox-flow are affected by CVE-2021-33605? com.vaadin:vaadin-checkbox-flow (maven) versions >= 12.0.0, < 14.6.8 is affected.
Is there a fix for CVE-2021-33605? Yes. CVE-2021-33605 is fixed in 14.6.8, 20.0.6. Upgrade to this version or later.
Is CVE-2021-33605 exploitable, and should I be worried? Whether CVE-2021-33605 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-2021-33605 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-2021-33605?
- Upgrade com.vaadin:vaadin-checkbox-flow to 14.6.8 or later
- Upgrade com.vaadin:vaadin-checkbox-flow to 20.0.6 or later