CVE-2006-6503

Name: CVE-2006-6503
Creator: NVD / NIST
Published: 2006-12-20T01:28:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.97%

Last modified Jun 16, 2026

CVE-2006-6503 is a vulnerability of currently unknown severity. Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to bypass cross-site scripting (XSS) protection by changing the src attribute of an IMG element to a javascript: URI.. EPSS estimates a 3.97% chance of exploitation in the next 30 days.

Description

Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to bypass cross-site scripting (XSS) protection by changing the src attribute of an IMG element to a javascript: URI.

Metrics

EPSS Probability

3.97%

89.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	>= 1.5, < 1.5.0.9
Mozilla	Firefox	>= 2.0, < 2.0.0.1
Mozilla	Seamonkey	< 1.0.7
Mozilla	Thunderbird	< 1.5.0.9
Debian	Debian Linux	3.1
Debian	Debian Linux	4.0
Canonical	Ubuntu Linux	5.10
Canonical	Ubuntu Linux	6.06
Canonical	Ubuntu Linux	6.10

References

ftp://patches.sgi.com/support/free/security/advisories/20061202-01-P.ascBroken Link
http://fedoranews.org/cms/node/2297Broken Link
http://fedoranews.org/cms/node/2338Broken Link
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742Broken Link
http://rhn.redhat.com/errata/RHSA-2006-0758.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2006-0759.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2006-0760.htmlThird Party Advisory
http://secunia.com/advisories/23282Third Party Advisory
http://secunia.com/advisories/23420Third Party Advisory
http://secunia.com/advisories/23422Third Party Advisory
http://secunia.com/advisories/23433Third Party Advisory
http://secunia.com/advisories/23439Third Party Advisory
http://secunia.com/advisories/23440Third Party Advisory
http://secunia.com/advisories/23468Third Party Advisory
http://secunia.com/advisories/23514Third Party Advisory
http://secunia.com/advisories/23545Third Party Advisory
http://secunia.com/advisories/23589Third Party Advisory
http://secunia.com/advisories/23591Third Party Advisory
http://secunia.com/advisories/23598Third Party Advisory
http://secunia.com/advisories/23601Third Party Advisory
http://secunia.com/advisories/23614Third Party Advisory
http://secunia.com/advisories/23618Third Party Advisory
http://secunia.com/advisories/23672Third Party Advisory
http://secunia.com/advisories/23692Third Party Advisory
http://secunia.com/advisories/23988Third Party Advisory
http://secunia.com/advisories/24078Third Party Advisory
http://secunia.com/advisories/24390Third Party Advisory
http://security.gentoo.org/glsa/glsa-200701-02.xmlThird Party Advisory
http://securitytracker.com/id?1017414Third Party Advisory, VDB Entry
http://securitytracker.com/id?1017415Third Party Advisory, VDB Entry
http://securitytracker.com/id?1017416Third Party Advisory, VDB Entry
http://www.debian.org/security/2007/dsa-1253Third Party Advisory
http://www.debian.org/security/2007/dsa-1258Third Party Advisory
http://www.debian.org/security/2007/dsa-1265Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200701-03.xmlThird Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200701-04.xmlThird Party Advisory
http://www.kb.cert.org/vuls/id/405092Third Party Advisory, US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2007:010Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2007:011Third Party Advisory
http://www.mozilla.org/security/announce/2006/mfsa2006-72.htmlVendor Advisory
http://www.novell.com/linux/security/advisories/2006_80_mozilla.htmlBroken Link
http://www.novell.com/linux/security/advisories/2007_06_mozilla.htmlBroken Link
http://www.securityfocus.com/archive/1/455145/100/0/threaded
http://www.securityfocus.com/archive/1/455728/100/200/threaded
http://www.securityfocus.com/bid/21668Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/usn-398-1Third Party Advisory
http://www.ubuntu.com/usn/usn-398-2Third Party Advisory
http://www.ubuntu.com/usn/usn-400-1Third Party Advisory
http://www.us-cert.gov/cas/techalerts/TA06-354A.htmlThird Party Advisory, US Government Resource
http://www.vupen.com/english/advisories/2006/5068Third Party Advisory
http://www.vupen.com/english/advisories/2008/0083Third Party Advisory
https://issues.rpath.com/browse/RPL-883Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10895Third Party Advisory
ftp://patches.sgi.com/support/free/security/advisories/20061202-01-P.ascBroken Link
http://fedoranews.org/cms/node/2297Broken Link
http://fedoranews.org/cms/node/2338Broken Link
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742Broken Link
http://rhn.redhat.com/errata/RHSA-2006-0758.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2006-0759.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2006-0760.htmlThird Party Advisory
http://secunia.com/advisories/23282Third Party Advisory
http://secunia.com/advisories/23420Third Party Advisory
http://secunia.com/advisories/23422Third Party Advisory
http://secunia.com/advisories/23433Third Party Advisory
http://secunia.com/advisories/23439Third Party Advisory
http://secunia.com/advisories/23440Third Party Advisory
http://secunia.com/advisories/23468Third Party Advisory
http://secunia.com/advisories/23514Third Party Advisory
http://secunia.com/advisories/23545Third Party Advisory
http://secunia.com/advisories/23589Third Party Advisory
http://secunia.com/advisories/23591Third Party Advisory
http://secunia.com/advisories/23598Third Party Advisory
http://secunia.com/advisories/23601Third Party Advisory
http://secunia.com/advisories/23614Third Party Advisory
http://secunia.com/advisories/23618Third Party Advisory
http://secunia.com/advisories/23672Third Party Advisory
http://secunia.com/advisories/23692Third Party Advisory
http://secunia.com/advisories/23988Third Party Advisory
http://secunia.com/advisories/24078Third Party Advisory
http://secunia.com/advisories/24390Third Party Advisory
http://security.gentoo.org/glsa/glsa-200701-02.xmlThird Party Advisory
http://securitytracker.com/id?1017414Third Party Advisory, VDB Entry
http://securitytracker.com/id?1017415Third Party Advisory, VDB Entry
http://securitytracker.com/id?1017416Third Party Advisory, VDB Entry
http://www.debian.org/security/2007/dsa-1253Third Party Advisory
http://www.debian.org/security/2007/dsa-1258Third Party Advisory
http://www.debian.org/security/2007/dsa-1265Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200701-03.xmlThird Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200701-04.xmlThird Party Advisory
http://www.kb.cert.org/vuls/id/405092Third Party Advisory, US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2007:010Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2007:011Third Party Advisory
http://www.mozilla.org/security/announce/2006/mfsa2006-72.htmlVendor Advisory
http://www.novell.com/linux/security/advisories/2006_80_mozilla.htmlBroken Link
http://www.novell.com/linux/security/advisories/2007_06_mozilla.htmlBroken Link
http://www.securityfocus.com/archive/1/455145/100/0/threaded
http://www.securityfocus.com/archive/1/455728/100/200/threaded
http://www.securityfocus.com/bid/21668Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/usn-398-1Third Party Advisory
http://www.ubuntu.com/usn/usn-398-2Third Party Advisory
http://www.ubuntu.com/usn/usn-400-1Third Party Advisory
http://www.us-cert.gov/cas/techalerts/TA06-354A.htmlThird Party Advisory, US Government Resource
http://www.vupen.com/english/advisories/2006/5068Third Party Advisory
http://www.vupen.com/english/advisories/2008/0083Third Party Advisory
https://issues.rpath.com/browse/RPL-883Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10895Third Party Advisory

Timeline

Published: Dec 20, 2006
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2006-6503?

How severe is CVE-2006-6503?

Severity scoring for CVE-2006-6503 is pending analysis. The EPSS model estimates a 3.97% probability of exploitation in the next 30 days.

How do I fix CVE-2006-6503?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2006-6503?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST