CVE-2026-33700

MEDIUM

Vikunja has a Link Share Delete IDOR — Missing Project Ownership Check Allows Cross-Project Link Share Deletion

Title source: cna
STIX 2.1

Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the `DELETE /api/v1/projects/:project/shares/:share` endpoint does not verify that the link share belongs to the project specified in the URL. An attacker with admin access to any project can delete link shares from other projects by providing their own project ID combined with the target share ID. Version 2.2.1 patches the issue.

References (2)

Scores

CVSS v3 4.9
EPSS 0.0004
EPSS Percentile 13.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (3)
code.vikunja.io/api 0 - 2.2.1Go
go-vikunja/vikunja < 2.2.1
vikunja/vikunja < 2.2.1
Published Mar 24, 2026
Tracked Since Mar 24, 2026