CVE-2020-27847

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    CVE-2020-27847

    Published: 28 May 2021Last Modified: 9 Jul 2026

    Summary:

    Details: A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.

    References: https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/, https://bugzilla.redhat.com/show_bug.cgi?id=1907732, https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -0f9e2888ab65c5b18c4881eaeeb7e38d997e1d92

    Affected versions

    v2.26.0

    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-2020-27847 | CVE-DB