CVE-2021-3639

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    CVE-2021-3639

    Published: 22 Aug 2022Last Modified: 8 Jul 2026

    Summary:

    Details: A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker to facilitate phishing attacks by tricking users into visiting a trusted web application URL that redirects to an external and potentially malicious server. The highest threat from this liability is to confidentiality and integrity.

    References: https://bugzilla.redhat.com/show_bug.cgi?id=1980648, https://access.redhat.com/security/cve/CVE-2021-3639, https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -d5cfa396f69ba2ee0d1048fe59c2f0f4a6d077ef

    Affected versions

    v0.17.0

    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-2021-3639 | CVE-DB