CVE-2026-55065High· 8.1▾ Twilight

Vikunja is an open-source self-hosted task management platform

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score45/ 100 · Moderate

impact 44.6 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Aug 28, 2026

Updated

Sep 9, 2026

CVSS

8.1

Vendor

api

Product

code.vikunja.io/api

CWE

CWE-285, CWE-639

Depth score

45 · Moderate

EPSS

0.35% · p28

Platforms

—

Source

NVD

Vector

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

EPSS history

Exploit-prediction probability, daily snapshots since Aug 29.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 12 days

Aug 28, 2026Published
Disclosed via NVD
Aug 29, 2026EPSS first tracked
0.3%
Sep 9, 2026Record revised
Last analysed / modified upstream

api CWE-285 CWE-639 #nvd #ghsa #go

Affected

code.vikunja.io/api >= 0.24.6, < 2.4.0

Patched in

code.vikunja.io/api 2.4.0

Full technical detail▾

Overview

Vikunja is an open-source self-hosted task management platform. From 0.24.6 until 2.4.0, DELETE /api/v1/projects/:project/views/:view permits an authenticated user to supply a view identifier from another project while authorizing only against an attacker-controlled project identifier. ProjectView.CanDelete in pkg/models/project_view_permissions.go does not establish that the view belongs to the path project, and ProjectView.Delete in pkg/models/project_view.go continues after the scoped project_views delete affects no rows. Its subsequent deletes select task_buckets and task_positions only by project_view_id, allowing cross-tenant destruction of Kanban assignments and ordering while leaving the victim view and tasks intact. This issue is fixed in version 2.4.0.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-55065)

Affected packages:

code.vikunja.io/api >= 0.24.6, < 2.4.0

Patched in:

code.vikunja.io/api 2.4.0

Source: https://github.com/advisories/GHSA-gg93-x632-9ccv

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#ghsa#go

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