CVE-2021-3859

    Dashboard / Vulnerabilities / CVE-2021-3859

    CVE-2021-3859

    Published: 26 Aug 2022Last Modified: 8 Jul 2026

    Summary:

    Details: A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks.

    References: https://access.redhat.com/security/cve/CVE-2021-3859, https://github.com/undertow-io/undertow/pull/1296, https://security.netapp.com/advisory/ntap-20221201-0004/, https://bugzilla.redhat.com/show_bug.cgi?id=2010378, https://github.com/undertow-io/undertow/commit/e43f0ada3f4da6e8579e0020cec3cb1a81e487c2, https://issues.redhat.com/browse/UNDERTOW-1979

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -c0b0d337dbb56bbc5f5190dd9ba6579a8afbd17d

    Affected versions

    2.2.14.Final
    2.2.13.Final
    2.2.12.Final
    2.2.11.Final
    2.2.10.Final
    2.2.9.Final
    2.2.8.Final
    2.2.7.Final
    2.2.6.Final
    2.2.5.Final
    2.2.3.Final
    2.2.4.Final
    2.2.2.Final
    2.2.1.Final
    2.2.0.Final

    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
    CVE-2021-3859 | CVE-DB