Description
export_handler.php in WebCalendar 1.0.1 allows remote attackers to overwrite WebCalendar data files via a modified id 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 3.1 | webcalendar | 0.9.45-4sarge3 | DSA-1002-1 |
Advisories 1
- DSA-1002-1 webcalendar - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 17784 third-party-advisory
- 20051128 WebCalendar Multiple Vulnerabilities mailing-list
- 19240 third-party-advisory
- ADV-2005-2643 vdb-entry
- 215 third-party-advisory
- webcalendar-exporthandler-file-overwrite(23370) vdb-entry
- http://www.ush.it/2005/11/28/webcalendar-multiple-vulnerabilities
- http://sourceforge.net/forum/forum.php?thread_id=1392833&forum_id=11587
- 15608 vdb-entry
- 21220 vdb-entry
- DSA-1002 vendor-advisory