CVE-2019-25027

Name: CVE-2019-25027
Creator: NVD / NIST
Published: 2021-04-23T16:15:07.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2019-25027 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Missing output sanitization in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 through 1.0.10 (Vaadin 10.0.0 through 10.0.13), and 1.1.0 through 1.4.2 (Vaadin 11.0.0 through 13.0.5) allows attacker to execute malicious JavaScript via crafted URL. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

Missing output sanitization in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 through 1.0.10 (Vaadin 10.0.0 through 10.0.13), and 1.1.0 through 1.4.2 (Vaadin 11.0.0 through 13.0.5) allows attacker to execute malicious JavaScript via 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

0.67%

47.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vaadin	Flow	>= 1.0.0, < 1.0.11
Vaadin	Flow	>= 1.1.0, < 1.4.3
Vaadin	Vaadin	>= 10.0.0, < 10.0.14
Vaadin	Vaadin	>= 11.0.0, < 13.0.6

References

https://github.com/vaadin/flow/pull/5498Patch, Third Party Advisory
https://vaadin.com/security/cve-2019-25027Vendor Advisory
https://github.com/vaadin/flow/pull/5498Patch, Third Party Advisory
https://vaadin.com/security/cve-2019-25027Vendor Advisory

Timeline

Published: Apr 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-25027?

How severe is CVE-2019-25027?

CVE-2019-25027 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2019-25027?

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-2019-25027?

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

Scan your code now

Source: NVD / NIST