CVE-2026-54766Medium▾ Sunlit

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

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score28/ 100 · Low

impact 27.5 · 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

—

Vendor

api

Product

code.vikunja.io/api

CWE

CWE-285, CWE-863

Depth score

28 · Low

EPSS

0.31% · p24

Platforms

—

Source

NVD

Vector

—

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-863 #nvd #ghsa #go

Affected

code.vikunja.io/api >= 0.21.0, <= 2.3.0

Patched in

code.vikunja.io/api 2.4.0

Full technical detail▾

Overview

Vikunja is an open-source self-hosted task management platform. From 0.21.0 until 2.4.0, the project duplication operation in pkg/models/project_duplicate.go allows an authenticated user who can read a source project to place its duplicate beneath an arbitrary target parent project. ProjectDuplicate.CanCreate calls parent.CanCreate on an unhydrated Project containing only the body supplied parent_project_id instead of calling parent.CanWrite, so the target parent write-permission check is skipped. The ordinary project creation path enforces that permission, but PUT /api/v1/projects/{project}/duplicate does not, allowing attacker-owned content to be injected into another user or team project hierarchy. 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-2026-54766)

Affected packages:

code.vikunja.io/api >= 0.21.0, <= 2.3.0

Patched in:

code.vikunja.io/api 2.4.0

Source: https://github.com/advisories/GHSA-f27p-pw2p-9pr4

References

Related vulnerabilities

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

#nvd#ghsa#go

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