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    CVE-2016-2817

    The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs.update API calls, which allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted extension that accesses a (1) javascript: or (2) data: URL.

    Published:Apr 26, 2016
    Last Modified:Apr 12, 2025
    EPS:Apr 30, 2016
    EPSS Score:0.00399
    CVSS Score:5.4

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-84138 (CVSS 6.5) — Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
    http://www.mozilla.org/security/announce/2016/mfsa2016-46.html
    http://www.securitytracker.com/id/1035692
    http://www.ubuntu.com/usn/USN-2936-1
    http://www.ubuntu.com/usn/USN-2936-2
    http://www.ubuntu.com/usn/USN-2936-3
    https://bugzilla.mozilla.org/show_bug.cgi?id=1227462
    https://security.gentoo.org/glsa/201701-15
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
    http://www.mozilla.org/security/announce/2016/mfsa2016-46.html
    http://www.securitytracker.com/id/1035692
    http://www.ubuntu.com/usn/USN-2936-1
    http://www.ubuntu.com/usn/USN-2936-2
    http://www.ubuntu.com/usn/USN-2936-3
    https://bugzilla.mozilla.org/show_bug.cgi?id=1227462
    https://security.gentoo.org/glsa/201701-15

    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