Vaadin Flow-Server up to 2.6.1/6.0.9 URL encoding error

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Vaadin Flow-Server up to 2.6.1/6.0.9. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component URL Handler. This manipulation causes encoding error. This vulnerability is registered as CVE-2021-33604. The attack needs to be launched locally. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Vaadin Flow-Server up to 2.6.1/6.0.9. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component URL Handler. The manipulation with an unknown input leads to a encoding error vulnerability. The CWE definition for the vulnerability is CWE-172. The product does not properly encode or decode the data, resulting in unexpected values. As an impact it is known to affect confidentiality.

The weakness was published 06/25/2021. It is possible to read the advisory at vaadin.com. This vulnerability is known as CVE-2021-33604. The technical details are unknown and an exploit is not publicly available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2021-1309). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Encoding error
CWE: CWE-172
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

05/27/2021 🔍
06/25/2021 +29 days 🔍
06/25/2021 +0 days 🔍
10/07/2025 +1565 days 🔍

Sourcesinfo

Advisory: vaadin.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-33604 (🔍)
GCVE (CVE): GCVE-0-2021-33604
GCVE (VulDB): GCVE-100-177595
EUVD: 🔍

Entryinfo

Created: 06/25/2021 13:15
Updated: 10/07/2025 08:15
Changes: 06/25/2021 13:15 (37), 07/02/2021 14:39 (6), 07/02/2021 14:44 (1), 10/07/2025 08:15 (15)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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