Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV GetResource and GetResourcesByList methods fetch tasks by UID from the database without verifying that the authenticated user has access to the task's project. Any authenticated CalDAV user who knows (or guesses) a task UID can read the full task data from any project on the instance. This vulnerability is fixed in 2.3.0.
Affected products
vikunja: vikunja
References5
- github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4g… ExploitVendor Advisory
- github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4g… ExploitVendor Advisory
- github.com/go-vikunja/vikunja/commit/879462d717351fe5d276ddec52… Patch
- github.com/go-vikunja/vikunja/pull/2579 Issue Tracking
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0 Release Notes
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 13 · as of 12 November 2026
- CWE
- CWE-862
Could this be exploited in your environment?
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