Description
Cross-site scripting (XSS) vulnerability in SqWebMail 5.0.4 and possibly other versions allows remote attackers to inject arbitrary web script or HTML via an HTML e-mail containing tags with strings that contain ">" or other special characters, which is not properly sanitized by SqWebMail.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- SqWebMail 5.0.4 - HTML Email IMG Tag Script Injection EDB-26200 · webapps · Aug 29, 2005 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-820-1 courier - missing input sanitising Debian Security (DSA / DLA) · Mar 9, 2026
References
- 16600 third-party-advisory
- 20050829 Secunia Research: SqWebMail HTML Emails Script Insertion Vulnerability mailing-list
- http://secunia.com/secunia_research/2005-39/advisory/
- 14676 vdb-entry
- 17156 third-party-advisory
- sqwebmail-html-xss(22043) vdb-entry
- USN-201-1 vendor-advisory
- 20050829 Secunia Research: SqWebMail HTML Emails Script Insertion mailing-list