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    CVE-2026-103417

    Firefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the saved-login UI was open. Autofill was not bound to the originating page or rejected when its origin changed. This vulnerability was fixed in Firefox for iOS 157.1.

    Published:Oct 13, 2026
    Last Modified:Oct 17, 2026
    EPS:Oct 13, 2026
    EPSS Score:0.00078
    CVSS Score:5.5

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox For Ios

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

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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