What is CVE-2021-33604?

CVE-2021-33604 is a low-severity vulnerability in Vaadin Flow-server, classified under CWE-172. CVSS score: 2.5/10. Published 2021-06-24.

How severe is CVE-2021-33604?

Low severity. CVSS v3 base score is 2.5 out of 10.

Is CVE-2021-33604 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Vaadin Flow-server

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…

EPSS: 0.001 (17.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Vaadin Flow-server — versions 2.0.0, unspecified, 3.0.0
Vaadin — versions 14.0.0, unspecified, 15.0.0

Weakness classification (CWE)

CWE-172

Public proof-of-concept exploits

muneebaashiq/MBProjects

References

vaadin.com/security/cve-2021-33604 (x_refsource_CONFIRM)
github.com/vaadin/flow/pull/11099 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-33604?: CVE-2021-33604 is a low-severity vulnerability in Vaadin Flow-server, classified under CWE-172. CVSS score: 2.5/10. Published 2021-06-24.
How severe is CVE-2021-33604?: Low severity. CVSS v3 base score is 2.5 out of 10.
Is CVE-2021-33604 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.