Description
Cross-site scripting (XSS) vulnerability in addevent.php in Horde Kronolith 2.1.7, Groupware Webmail Edition 1.0.6, and Groupware 1.0.5 allows remote attackers to inject arbitrary web script or HTML via the url parameter.
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 ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 4.0 | kronolith2 | 2.1.4-1etch1 | DSA-1560-1 |
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.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Horde Webmail 1.0.6 - 'addevent.php' Cross-Site Scripting EDB-31697 · webapps · Apr 23, 2008 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-1560-1 kronolith2 - cross site scripting Debian Security (DSA / DLA) · Mar 9, 2026
References
- 51238 vdb-entry
- FEDORA-2008-3460 vendor-advisory
- 29920 third-party-advisory
- 28898 vdb-entry
- 30649 third-party-advisory
- 1019934 vdb-entry
- FEDORA-2008-3543 vendor-advisory
- 20080422 Horde Webmail XSS [Aria-Security] mailing-list
- horde-webmail-addevent-xss(41974) vdb-entry
- ADV-2008-1373 vdb-entry
- DSA-1560 vendor-advisory
- 3831 third-party-advisory
- http://forum.aria-security.com/showthread.php?t=49
- [kronolith] 20080427 Kronolith H3 (2.1.8) (final) mailing-list