CVE-2021-33611

Name: CVE-2021-33611
Creator: NVD / NIST
Published: 2021-11-02T10:15:07.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.95%

Last modified Jun 17, 2026

CVE-2021-33611 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Missing output sanitization in test sources in org.webjars.bowergithub.vaadin:vaadin-menu-bar versions 1.0.0 through 1.2.0 (Vaadin 14.0.0 through 14.4.4) allows remote attackers to execute malicious JavaScript in browser by opening crafted URL. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

Missing output sanitization in test sources in org.webjars.bowergithub.vaadin:vaadin-menu-bar versions 1.0.0 through 1.2.0 (Vaadin 14.0.0 through 14.4.4) allows remote attackers to execute malicious JavaScript in browser by opening crafted URL

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.95%

56.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vaadin	Vaadin	>= 14.0.0, <= 14.4.4
Vaadin	Vaadin-Menu-Bar	>= 1.0.0, <= 1.2.0

References

https://github.com/vaadin/vaadin-menu-bar/pull/126Patch, Third Party Advisory
https://vaadin.com/security/cve-2021-33611Exploit, Third Party Advisory
https://github.com/vaadin/vaadin-menu-bar/pull/126Patch, Third Party Advisory
https://vaadin.com/security/cve-2021-33611Exploit, Third Party Advisory

Timeline

Published: Nov 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33611?

How severe is CVE-2021-33611?

CVE-2021-33611 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33611?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33611?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST