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CVE-2006-2783

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF...

4.3 MediumFix available

CVE-2006-2783 is a medium vulnerability (CVSS 4.3) in Mozilla Firefox, published June 2, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.67%, the 77th percentile. Fixed in thunderbird 1.5.0.4-1.

What does this mean?
Severity
4.3 MediumCVSS 2.0, NVD
Exploit chance
1.67%EPSS, 77th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
1.5.0.4-1thunderbird +105 more

Description

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Exploit likelihood

1.67%Down 2.3 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
thunderbird
Debian:12
before 1.5.0.4-1
1.5.0.4-1
thunderbird
Debian:13
before 1.5.0.4-1
1.5.0.4-1
thunderbird
Debian:14
before 1.5.0.4-1
1.5.0.4-1
mozilla
Debian:3.1
From an advisory covering 14 CVEs
before 2:1.7.8-1sarge7.1, plus listed versions
2:1.7.8-12:1.7.8-1sarge12:1.7.8-1sarge22:1.7.8-1sarge32:1.7.8-1sarge52:1.7.8-1sarge62:1.7.8-1sarge7
2:1.7.8-1sarge7.1
mozilla-firefox
Debian:3.1
From an advisory covering 13 CVEs
before 1.0.4-2sarge9, plus listed versions
1.0.4-21.0.4-2sarge11.0.4-2sarge21.0.4-2sarge31.0.4-2sarge41.0.4-2sarge51.0.4-2sarge61.0.4-2sarge7
1.0.4-2sarge9
mozilla-thunderbird
Debian:3.1
From an advisory covering 15 CVEs
before 1.0.2-2.sarge1.0.8a, plus listed versions
1.0.2-21.0.2-2.sarge1.0.61.0.2-2.sarge1.0.71.0.2-2.sarge1.0.8
1.0.2-2.sarge1.0.8a
seamonkey
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-chat
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
Show 96 moreShow less
Affected packages
PackageAffectedFixed
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-mail
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-chat
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-mail
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-chat
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-mail
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-chat
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-mail
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 12 CVEs
before 0:1.0.2-0.1.0.EL3
0:1.0.2-0.1.0.EL3
devhelp
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
seamonkey
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-chat
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-js-debugger
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-mail
Red Hat:enterprise_linux:4::as
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
devhelp
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
seamonkey
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-chat
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-js-debugger
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-mail
Red Hat:enterprise_linux:4::desktop
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
devhelp
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
seamonkey
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-chat
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-js-debugger
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-mail
Red Hat:enterprise_linux:4::es
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
devhelp
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
devhelp-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:0.10-0.2.el4
0:0.10-0.2.el4
seamonkey
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-chat
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-js-debugger
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
seamonkey-mail
Red Hat:enterprise_linux:4::ws
From an advisory covering 26 CVEs
before 0:1.0.3-0.el4.1
0:1.0.3-0.el4.1
firefox
Red Hat:enterprise_linux:4::as
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox
Red Hat:enterprise_linux:4::desktop
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox
Red Hat:enterprise_linux:4::es
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox
Red Hat:enterprise_linux:4::ws
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
firefox-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 24 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird
Red Hat:enterprise_linux:4::as
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird
Red Hat:enterprise_linux:4::desktop
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird
Red Hat:enterprise_linux:4::es
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird
Red Hat:enterprise_linux:4::ws
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1
thunderbird-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 25 CVEs
before 0:1.5.0.5-0.el4.1
0:1.5.0.5-0.el4.1

What each source reports

NVD Score used4.3

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Record
CVE-2006-2783
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-79
Updated
2026-11-02
CVE ListNo score

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Record
CVE-2006-2783
Updated
2026-11-02
EUVDEUVD-2006-2780No score

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Record
EUVD-2006-2780
Updated
2026-11-03
GitHub AdvisoriesGHSA-776f-3rrc-fhxfNo score

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF...

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Record
GHSA-776f-3rrc-fhxf
Weakness
CWE-79
Updated
2026-11-02
OSVNo score

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Record
CVE-2006-2783
Updated
2026-11-02
OSVDEBIAN-CVE-2006-2783No score

Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

Record
DEBIAN-CVE-2006-2783
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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