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    CVE-2015-4498

    The add-on installation feature in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to bypass an intended user-confirmation requirement by constructing a crafted data: URL and triggering navigation to an arbitrary http: or https: URL at a certain early point in the installation process.

    Published:Aug 27, 2015
    Last Modified:Apr 12, 2025
    EPS:Aug 29, 2015
    EPSS Score:0.00576
    CVSS Score:7.5

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-84144 (CVSS 7.5) — Internally found bugs present in Thunderbird 154 and Thunderbird ESR 153.1. Some of these bugs showed evidence…
    CVE-2026-84143 (CVSS 9.8) — Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of th…
    CVE-2026-84142 (CVSS 9.8) — Internally found bugs present in Thunderbird 154. Some of these bugs showed evidence of memory corruption or a…
    CVE-2026-84141 (CVSS 9.8) — Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 155, Firefox ESR…
    CVE-2026-84140 (CVSS 9.8) — Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ES…
    CVE-2026-84139 (CVSS 6.1) — Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.…
    CVE-2026-84138 (CVSS 6.5) — Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155…
    CVE-2026-84137 (CVSS 4.3) — Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153…
    CVE-2026-84136 (CVSS 6.1) — Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, …
    CVE-2026-84135 (CVSS 9.8) — Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.…

    References

    http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00013.html
    http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
    http://lists.opensuse.org/opensuse-updates/2015-09/msg00000.html
    http://rhn.redhat.com/errata/RHSA-2015-1693.html
    http://www.debian.org/security/2015/dsa-3345
    http://www.mozilla.org/security/announce/2015/mfsa2015-95.html
    http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
    http://www.securityfocus.com/bid/76505
    http://www.securitytracker.com/id/1033396
    http://www.ubuntu.com/usn/USN-2723-1
    https://bugzilla.mozilla.org/show_bug.cgi?id=1042699
    http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00013.html
    http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
    http://lists.opensuse.org/opensuse-updates/2015-09/msg00000.html
    http://rhn.redhat.com/errata/RHSA-2015-1693.html
    http://www.debian.org/security/2015/dsa-3345
    http://www.mozilla.org/security/announce/2015/mfsa2015-95.html
    http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
    http://www.securityfocus.com/bid/76505
    http://www.securitytracker.com/id/1033396
    http://www.ubuntu.com/usn/USN-2723-1
    https://bugzilla.mozilla.org/show_bug.cgi?id=1042699

    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