Reflected cross-site scripting in development mode handler in Vaadin 14, 15-19
CVE-2021-33604

2.5LOW

Key Information:

Vendor

Vaadin

Status
Vaadin
Flow-server
Vendor
CVE Published:
24 June 2021

What is CVE-2021-33604?

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.

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Deploy the Patch

Affected Version(s)

flow-server 2.0.0

flow-server <= 2.6.1

flow-server 3.0.0

References

https://vaadin.com/security/cve-2021-33604
x_refsource_CONFIRM
https://github.com/vaadin/flow/pull/11099
x_refsource_CONFIRM

CVSS V3.1

Score:
2.5
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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