What’s Vulnerable › Vulnerabilities

CVE-2026-33312: Read-only Vikunja users can delete project background images via broken object-level authorization

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-20 · updated 2026-06-17
• Weakness: CWE-863

Description

Vikunja is an open-source self-hosted task management platform. Starting in version 0.20.2 and prior to version 2.2.0, the `DELETE /api/v1/projects/:project/background` endpoint checks `CanRead` permission instead of `CanUpdate`, allowing any user with read-only access to a project to permanently delete its background image. Version 2.2.0 fixes the issue.

Affected products

• go-vikunja vikunja: from 0.20.2 before 2.2.0 — fixed in 2.2.0

How to fix

Upgrade to a fixed version: go-vikunja vikunja 2.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-564f-wx8x-878h
• https://vikunja.io/changelog/vikunja-v2.2.0-was-released

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