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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-48ch-p4gq-x46x Vikunja Missing Authorization on CalDAV Task Read
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 10 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Vikunja has Missing Authorization on CalDAV Task Read
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-10T16:04:32.083Z

Reserved: 2026-04-03T21:25:12.162Z

Link: CVE-2026-35598

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-10T17:17:03.370

Modified: 2026-04-10T17:17:03.370

Link: CVE-2026-35598

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses