CVE-2021-33604
low-risk
Published 2021-06-24
URL encoding error in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows local user to execute arbitrary JavaScript code by opening crafted URL in browser.
Do I need to act?
-
0.05% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
2
CVSS 2.5/10
Low
LOCAL
/ HIGH complexity
Affected Products (2)
Flow-Server
Affected Vendors
References (4)
Vendor Advisory
https://vaadin.com/security/cve-2021-33604
Vendor Advisory
https://vaadin.com/security/cve-2021-33604
13
/ 100
low-risk
Severity
6/34 · Minimal
Exploitability
0/34 · Minimal
Exposure
7/34 · Low