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    CVE-2025-3859

    Websites directing users to long URLs that caused eliding to occur in the location view could leverage the truncating behavior to potentially trick users into thinking they were on a different webpage. This vulnerability was fixed in Focus 138.

    Published:Apr 30, 2025
    Last Modified:Apr 20, 2026
    EPS:Apr 30, 2025
    EPSS Score:0.00156
    CVSS Score:4.3

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox Focus

    Exploits

    No exploit reference

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    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