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    CVE-2026-23866

    Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.15.72 and WhatsApp for Android v2.25.8.0 to v2.26.7.10 could have allowed a user to trigger processing of media content from an arbitrary URL on another user’s device, including triggering OS-controlled custom URL scheme handlers. We have not seen evidence of exploitation in the wild.

    Published:May 1, 2026
    Last Modified:May 11, 2026
    EPS:May 1, 2026
    EPSS Score:0.00009
    CVSS Score:4.3

    Affected Products

    Vendor
    Whatsapp
    Product
    Whatsapp
    Vendor
    Whatsapp
    Product
    Whatsapp For Android
    Vendor
    Whatsapp
    Product
    Whatsapp For Ios

    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