CVE-2019-25027

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

MEDIUM

6.1

CVSS Score

Published: April 23, 2021 at 04:05 PM UTC

Updated: June 17, 2026 at 02:31 AM UTC

3 products affected across 1 vendorVaadinFlowFlow Server

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Severity

MEDIUM6.1

Exploit prediction

EPSS 0.7%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Flow · Vaadinmaven

95%

1.0.0 ≤ v < 1.0.111.1.0 ≤ v < 1.4.3

Affected range stops below 1.0.11, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.4.3, so it looks safe — our inference, not a vendor statement

Vaadin · Vaadinmaven

95%

v ≥ 10.0.010.0.0 ≤ v < 10.0.1411.0.0 ≤ v < 13.0.610.0.0

Affected range stops below 10.0.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.0.6, so it looks safe — our inference, not a vendor statement

Flow Server · Vaadin

60%

v ≥ 1.0.01.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/vaadin/flow/pull/5498

x_refsource_MISCVendor Advisory

Source: [email protected]

https://vaadin.com/security/cve-2019-25027

CVSS

6.1MEDIUMVaadin

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-81CWE-79

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