CVE-2026-54766

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.

• CWE-285
• CWE-863

• https://github.com/go-vikunja/vikunja/commit/d911caaa11c748c3abc6b98b3189afea2677bcb0
• https://github.com/go-vikunja/vikunja/pull/3239
• https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-f27p-pw2p-9pr4

Published

Aug 28, 2026

Last Modified

Sep 9, 2026

Status

Deferred

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-54760Langroid is a framework for building large-language-model-po…9.3
• CVE-2026-54761Traefik is an HTTP reverse proxy and load balancer. Prior to…7.1
• CVE-2026-54762Traefik is an HTTP reverse proxy and load balancer. From 3.7…8.6
• CVE-2026-54763Traefik is an HTTP reverse proxy and load balancer. Prior to…10
• CVE-2026-54764Traefik is an HTTP reverse proxy and load balancer. Prior to…5.8
• CVE-2026-54765Traefik is an open source HTTP reverse proxy and load balanc…8.5
• CVE-2026-54767WeGIA is a web manager for charitable institutions. Prior to…9.1
• CVE-2026-54768WPGraphQL provides a GraphQL API for WordPress sites. From 2…6.9
• CVE-2026-54769Langroid is a framework for building large-language-model-po…10
• CVE-2026-5477An integer overflow existed in the wolfCrypt CMAC implementa…7.5
• CVE-2026-54770WebOb provides objects for HTTP requests and responses. Prio…6.1
• CVE-2026-54771Langroid is a framework for building large-language-model-po…8.1