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    CVE-2013-1720

    The nsHtml5TreeBuilder::resetTheInsertionMode function in the HTML5 Tree Builder in Mozilla Firefox before 24.0, Thunderbird before 24.0, and SeaMonkey before 2.21 does not properly maintain the state of the insertion-mode stack for template elements, which allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer over-read) by triggering use of this stack in its empty state.

    Published:Sep 17, 2013
    Last Modified:Apr 11, 2025
    EPS:Sep 18, 2013
    EPSS Score:0.0194
    CVSS Score:6.8

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Seamonkey
    Vendor
    Mozilla
    Product
    Thunderbird

    Exploits

    No exploit reference

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    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…
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    References

    http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115907.html
    http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116610.html
    http://lists.fedoraproject.org/pipermail/package-announce/2013-September/117526.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00055.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00057.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00059.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00061.html
    http://www.mozilla.org/security/announce/2013/mfsa2013-77.html
    http://www.securityfocus.com/bid/62465
    http://www.ubuntu.com/usn/USN-1951-1
    http://www.ubuntu.com/usn/USN-1952-1
    https://bugzilla.mozilla.org/show_bug.cgi?id=888820
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18617
    http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115907.html
    http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116610.html
    http://lists.fedoraproject.org/pipermail/package-announce/2013-September/117526.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00055.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00057.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00059.html
    http://lists.opensuse.org/opensuse-updates/2013-09/msg00061.html
    http://www.mozilla.org/security/announce/2013/mfsa2013-77.html
    http://www.securityfocus.com/bid/62465
    http://www.ubuntu.com/usn/USN-1951-1
    http://www.ubuntu.com/usn/USN-1952-1
    https://bugzilla.mozilla.org/show_bug.cgi?id=888820
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18617

    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