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    CVE-2021-31406

    Non-constant-time comparison of CSRF tokens in endpoint request handler in com.vaadin:flow-server versions 3.0.0 through 5.0.3 (Vaadin 15.0.0 through 18.0.6), and com.vaadin:fusion-endpoint version 6.0.0 (Vaadin 19.0.0) allows attacker to guess a security token for Fusion endpoints via timing attack.

    Published:Apr 23, 2021
    Last Modified:Nov 21, 2024
    EPS:Apr 23, 2021
    EPSS Score:0.00054
    CVSS Score:4

    Affected Products

    Vendor
    Vaadin
    Product
    Flow
    Vendor
    Vaadin
    Product
    Vaadin

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2025-9467 (CVSS 5.3) — When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible …
    CVE-2021-31412 (CVSS 5.3) — Improper sanitization of path in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 thro…
    CVE-2021-31411 (CVSS 6.3) — Insecure temporary directory usage in frontend build functionality of com.vaadin:flow-server versions 2.0.9 th…
    CVE-2021-31408 (CVSS 6.3) — Authentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 …
    CVE-2021-31407 (CVSS 8.6) — Vulnerability in OSGi integration in com.vaadin:flow-server versions 1.2.0 through 2.4.7 (Vaadin 12.0.0 throug…
    CVE-2021-31405 (CVSS 7.5) — Unsafe validation RegEx in EmailField component in com.vaadin:vaadin-text-field-flow versions 2.0.4 through 2.…
    CVE-2021-31404 (CVSS 4) — Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 t…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High