CVE-2026-35598CWE-862

Vikunja has Missing Authorization on CalDAV Task Read

Medium · published April 10, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
27.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00348 · 27.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-04-10T16:04Z
EPSS history
Timeline
  • 10 APR 16:04Z
    Vikunja has Missing Authorization on CalDAV Task Read
    cvelistv5