CVE-2026-35598

Published: Apr 10, 2026Modified: Jun 17, 2026

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitability: 2.8 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

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 (1)

Products: Vikunja: Vikunja

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Vikunja Vikunja	Before 2.3.0

Related CWEs

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (5)

https://github.com/go-vikunja/vikunja/commit/879462d717351fe5d276ddec5246bdec31b41661

Source: security-advisories@github.com

Patch

https://github.com/go-vikunja/vikunja/pull/2579

Source: security-advisories@github.com

Issue Tracking

https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0

Source: security-advisories@github.com

Release Notes

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.