What is the CVSS score of CVE-2021-33604?

CVE-2021-33604 has a CVSS 3.1 base score of 2.5 (Low). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.3%.

Is there a patch available for CVE-2021-33604?

Yes, a patch is available for CVE-2021-33604. Update the affected software to the latest version immediately.

Flow Server CVE-2021-33604

LOW

Encoding Error (CWE-172)

2021-06-24 security@vaadin.com

RCE Flow Server Vaadin

2.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

2.5 LOW

AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Jun 24, 2021 - 12:15 nvd

LOW 2.5

DescriptionNVD

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.

AnalysisAI

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. Rated low severity (CVSS 2.5), this vulnerability is no authentication required.

Technical ContextAI

This vulnerability is classified under CWE-172. 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. Affected products include: Vaadin Flow-Server, Vaadin. Version information: through 2.6.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.