Description
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
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 14 | davical | 1.1.9.2-1 | — |
| Debian 13 | davical | 1.1.9.2-1 | — |
| Debian 12 | davical | 1.1.9.2-1 | — |
| Debian 10 | davical | 1.1.8-1+deb10u1 | DSA-4582-1 |
| Debian 9 | davical | 1.1.5-1+deb9u1 | DSA-4582-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | davical | 1.1.3.1-1+deb8u1 | DLA-2034-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | davical | No fix yet | — |
| Ubuntu 16.04 LTS | davical | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | davical | 1.1.7-1ubuntu0.1~esm1 | USN-9050-1 |
Advisories 3
- USN-9050-1 davical vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- DSA-4582-1 davical - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2034-1 davical - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://www.davical.org/
- https://wiki.davical.org/index.php/Main_Page
- https://gitlab.com/davical-project/davical/blob/master/ChangeLog
- https://hackdefense.com/publications/cve-2019-18345-davical-caldav-server-vulnerability/
- http://packetstormsecurity.com/files/155630/DAViCal-CalDAV-Server-1.1.8-Reflective-Cross-Site-Scripting.html
- [debian-lts-announce] 20191214 [SECURITY] [DLA 2034-1] davical security update mailing-list
- DSA-4582 vendor-advisory
- 20191216 [SECURITY] [DSA 4582-1] davical security update mailing-list