CVE-2021-23971

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    CVE-2021-23971

    Published: 26 Feb 2021Last Modified: 10 Mar 2026

    Summary:

    Details: When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.

    References: , https://security.gentoo.org/glsa/202104-10, https://www.mozilla.org/security/advisories/mfsa2021-07/, https://bugzilla.mozilla.org/show_bug.cgi?id=1678545

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2021-23971 | CVE-DB