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    CVE-2006-1731

    Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0 returns the Object class prototype instead of the global window object when (1) .valueOf.call or (2) .valueOf.apply are called without any arguments, which allows remote attackers to conduct cross-site scripting (XSS) attacks.

    Published:Apr 14, 2006
    Last Modified:Apr 16, 2026
    EPS:Apr 14, 2006
    EPSS Score:0.02816
    CVSS Score:4.3

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Mozilla Suite
    Vendor
    Mozilla
    Product
    Seamonkey
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    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

    ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2006.26/SCOSA-2006.26.txt
    ftp://patches.sgi.com/support/free/security/advisories/20060404-01-U.asc
    http://lists.suse.com/archive/suse-security-announce/2006-Apr/0003.html
    http://secunia.com/advisories/19631
    http://secunia.com/advisories/19696
    http://secunia.com/advisories/19714
    http://secunia.com/advisories/19721
    http://secunia.com/advisories/19729
    http://secunia.com/advisories/19746
    http://secunia.com/advisories/19759
    http://secunia.com/advisories/19780
    http://secunia.com/advisories/19794
    http://secunia.com/advisories/19811
    http://secunia.com/advisories/19821
    http://secunia.com/advisories/19823
    http://secunia.com/advisories/19852
    http://secunia.com/advisories/19862
    http://secunia.com/advisories/19863
    http://secunia.com/advisories/19902
    http://secunia.com/advisories/19941
    http://secunia.com/advisories/19950
    http://secunia.com/advisories/20051
    http://secunia.com/advisories/21033
    http://secunia.com/advisories/21622
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-102550-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-228526-1
    http://support.avaya.com/elmodocs2/security/ASA-2006-205.htm
    http://www.debian.org/security/2006/dsa-1044
    http://www.debian.org/security/2006/dsa-1046
    http://www.debian.org/security/2006/dsa-1051
    http://www.gentoo.org/security/en/glsa/glsa-200604-12.xml
    http://www.gentoo.org/security/en/glsa/glsa-200604-18.xml
    http://www.gentoo.org/security/en/glsa/glsa-200605-09.xml
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:075
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:076
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:078
    http://www.mozilla.org/security/announce/2006/mfsa2006-19.html
    http://www.novell.com/linux/security/advisories/2006_04_25.html
    http://www.redhat.com/archives/fedora-announce-list/2006-April/msg00153.html
    http://www.redhat.com/archives/fedora-announce-list/2006-April/msg00154.html
    http://www.redhat.com/support/errata/RHSA-2006-0328.html
    http://www.redhat.com/support/errata/RHSA-2006-0329.html
    http://www.redhat.com/support/errata/RHSA-2006-0330.html
    http://www.securityfocus.com/archive/1/436296/100/0/threaded
    http://www.securityfocus.com/archive/1/436338/100/0/threaded
    http://www.securityfocus.com/archive/1/438730/100/0/threaded
    http://www.securityfocus.com/bid/17516
    http://www.vupen.com/english/advisories/2006/1356
    http://www.vupen.com/english/advisories/2006/3391
    https://exchange.xforce.ibmcloud.com/vulnerabilities/25820
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1955
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9604
    https://usn.ubuntu.com/271-1/
    https://usn.ubuntu.com/275-1/
    https://usn.ubuntu.com/276-1/
    ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2006.26/SCOSA-2006.26.txt
    ftp://patches.sgi.com/support/free/security/advisories/20060404-01-U.asc
    http://lists.suse.com/archive/suse-security-announce/2006-Apr/0003.html
    http://secunia.com/advisories/19631
    http://secunia.com/advisories/19696
    http://secunia.com/advisories/19714
    http://secunia.com/advisories/19721
    http://secunia.com/advisories/19729
    http://secunia.com/advisories/19746
    http://secunia.com/advisories/19759
    http://secunia.com/advisories/19780
    http://secunia.com/advisories/19794
    http://secunia.com/advisories/19811
    http://secunia.com/advisories/19821
    http://secunia.com/advisories/19823
    http://secunia.com/advisories/19852
    http://secunia.com/advisories/19862
    http://secunia.com/advisories/19863
    http://secunia.com/advisories/19902
    http://secunia.com/advisories/19941
    http://secunia.com/advisories/19950
    http://secunia.com/advisories/20051
    http://secunia.com/advisories/21033
    http://secunia.com/advisories/21622
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-102550-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-228526-1
    http://support.avaya.com/elmodocs2/security/ASA-2006-205.htm
    http://www.debian.org/security/2006/dsa-1044
    http://www.debian.org/security/2006/dsa-1046
    http://www.debian.org/security/2006/dsa-1051
    http://www.gentoo.org/security/en/glsa/glsa-200604-12.xml
    http://www.gentoo.org/security/en/glsa/glsa-200604-18.xml
    http://www.gentoo.org/security/en/glsa/glsa-200605-09.xml
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:075
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:076
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:078
    http://www.mozilla.org/security/announce/2006/mfsa2006-19.html
    http://www.novell.com/linux/security/advisories/2006_04_25.html
    http://www.redhat.com/archives/fedora-announce-list/2006-April/msg00153.html
    http://www.redhat.com/archives/fedora-announce-list/2006-April/msg00154.html
    http://www.redhat.com/support/errata/RHSA-2006-0328.html
    http://www.redhat.com/support/errata/RHSA-2006-0329.html
    http://www.redhat.com/support/errata/RHSA-2006-0330.html
    http://www.securityfocus.com/archive/1/436296/100/0/threaded
    http://www.securityfocus.com/archive/1/436338/100/0/threaded
    http://www.securityfocus.com/archive/1/438730/100/0/threaded
    http://www.securityfocus.com/bid/17516
    http://www.vupen.com/english/advisories/2006/1356
    http://www.vupen.com/english/advisories/2006/3391
    https://exchange.xforce.ibmcloud.com/vulnerabilities/25820
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1955
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9604
    https://usn.ubuntu.com/271-1/
    https://usn.ubuntu.com/275-1/
    https://usn.ubuntu.com/276-1/

    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