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CVE-2019-25027

20
FAUCET Score

CVE-2019-25027 describes a cross-site scripting (XSS) vulnerability in Vaadin Flow (versions 1.0.0-1.0.10 and 1.1.0-1.4.2) and Vaadin (versions 10.0.0-10.0.13 and 11.0.0-13.0.5) due to missing output sanitization in the default RouteNotFoundError view. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to execute malicious JavaScript via a crafted URL, requiring user interaction and potentially leading to information disclosure or limited integrity impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, < 1.0.11CPE matchmatch criteria
cpe:2.3:a:vaadin:flow:*:*:*:*:*:*:*:*
>= 1.1.0, < 1.4.3CPE matchmatch criteria
cpe:2.3:a:vaadin:flow:*:*:*:*:*:*:*:*
>= 10.0.0, < 10.0.14CPE matchmatch criteria
cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*
>= 11.0.0, < 13.0.6CPE matchmatch criteria
cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.67%
Probability of exploitation in next 30 days
EPSS Percentile
48.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0067 is in the 53rd percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: com.vaadin:flow-serverFixed in: 1.0.11
mavenpatch availablevia ghsa
Product: com.vaadin:flow-serverFixed in: 1.4.3

Vendor Advisories (1)

mavenGHSA-rp4x-wxqv-cf9mmedium

Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13

Apr 19, 2021

References

github.com / vaadin/flow/pull/5498
PatchThird Party Advisory
vaadin.com / security/cve-2019-25027
Vendor Advisory