Description
Multiple cross-site scripting (XSS) vulnerabilities in Horde Kronolith H3 before 2.0.6 allow remote authenticated users to inject arbitrary web script or HTML via (1) the Calendar name field when creating calendars, (2) event title field when deleting events, the (3) Category and (4) Location search fields, and the (5) attendees email address fields when editing event attendees, and possibly other vectors.
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 3.1 | kronolith | 1.1.4-2sarge1 | DSA-970-1 |
Advisories 1
- DSA-970-1 kronolith - missing input sanitising Debian Security (DSA / DLA) · Mar 9, 2026
References
- 18827 third-party-advisory
- 21609 vdb-entry
- 20051211 SEC Consult SA-20051211-0 :: Several XSS issues in Horde Framework, Kronolith Calendar, Mnemo Notes, Nag Tasks and Turba Addressbook mailing-list
- 21608 vdb-entry
- 17971 third-party-advisory
- 15808 vdb-entry
- ADV-2005-2834 vdb-entry
- DSA-970 vendor-advisory
- 21611 vdb-entry
- 21610 vdb-entry
- [horde-announce] 20051211 Kronolith H3 (2.0.6) (final) mailing-list
- http://www.sec-consult.com/245.html