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Vulnerability Details : CVE-2021-31404

Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.
Publish Date : 2021-04-23 Last Update Date : 2021-04-30
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) CSRF
CWE ID 203

- Products Affected By CVE-2021-31404

# Product Type Vendor Product Version Update Edition Language
1 Application Vaadin Flow * * * * Version Details Vulnerabilities
2 Application Vaadin Vaadin * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Vaadin Flow 1
Vaadin Vaadin 1

- References For CVE-2021-31404

- Metasploit Modules Related To CVE-2021-31404

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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