Weblate has IDOR in GroupViewSet that allows authenticated project manager to gain unauthorized read access to any private project

Impact The API did not properly handle project- and workspace-scoped teams and allowed setting invalid configurations, including granting access to projects the user has no access to. Patches https://github.com/WeblateOrg/weblate/pull/19970 References Parts of this issue were independently report...

GHSA-2Q2Q-JR9G-V9RF Weblate has IDOR in GroupViewSet that allows authenticated project manager to gain unauthorized read access to any private project

Impact The API did not properly handle project- and workspace-scoped teams and allowed setting invalid configurations, including granting access to projects the user has no access to. Patches https://github.com/WeblateOrg/weblate/pull/19970 References Parts of this issue were independently report...

CVE-2026-55065

creationtimestamp| type| source ---|---|--- 2026-08-28 18:35:30+00:00| published-proof-of-concept| https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv 2026-08-30 15:02:13+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mucnwabjtq2l...

Vikunja vulnerable to Improper Authorization and Authorization Bypass Through User-Controlled Key

Summary A user with only a single self-owned project can permanently destroy the Kanban bucket assignments taskbuckets and task ordering taskpositions of any other project view in the entire instance. The ProjectView.Delete model method runs three SQL statements: the first is properly scoped to...

CVE-2026-55065

Vikunja (open-source self-hosted task management platform) versions 0.24.6 through 2.4.0 are affected by an authorization bypass in ProjectView.Delete. The permission check (CanDelete) verifies admin status for the URL-supplied project but never confirms the view actually belongs to that project....

CVE-2026-55065 Vikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/api

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...

CVE-2026-55065

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...

CVE-2026-55065 Vikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/api

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...

Vikunja has an incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0

Summary The fix for CVE-2026-35595 project re-parenting privilege escalation only gates reparent operations when parentprojectid 0. A user with Write but not Admin permission on a shared child project can detach it from its parent by sending parentprojectid: 0, bypassing the Admin requirement. Th...

GHSA-44V6-7FXQ-VGF4 Vikunja has an incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0

Summary The fix for CVE-2026-35595 project re-parenting privilege escalation only gates reparent operations when parentprojectid 0. A user with Write but not Admin permission on a shared child project can detach it from its parent by sending parentprojectid: 0, bypassing the Admin requirement. Th...

CVE-2026-55064

Vikunja (open-source self-hosted task management platform) versions 2.3.0 through 2.4.0 contain an incomplete fix for CVE-2026-35595. The authorization checks in pkg/models/project_permissions.go and pkg/models/project.go only gate reparent operations when parent_project_id > 0, but UpdateProj...

CVE-2026-55064 Vikunja incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0

Vikunja is an open-source self-hosted task management platform. From 2.3.0 until 2.4.0, a user with Write but not Admin permission on a shared child project can detach it from its parent hierarchy by submitting parentprojectid equal to 0 to POST /api/v1/projects/project. The Project.CanUpdate...

CVE-2026-55064 Vikunja incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0

Vikunja is an open-source self-hosted task management platform. From 2.3.0 until 2.4.0, a user with Write but not Admin permission on a shared child project can detach it from its parent hierarchy by submitting parentprojectid equal to 0 to POST /api/v1/projects/project. The Project.CanUpdate...

EUVD-2026-67831

Vikunja is an open-source self-hosted task management platform. From 2.3.0 until 2.4.0, a user with Write but not Admin permission on a shared child project can detach it from its parent hierarchy by submitting parentprojectid equal to 0 to POST /api/v1/projects/project. The Project.CanUpdate...

CVE-2026-55064

Vikunja is an open-source self-hosted task management platform. From 2.3.0 until 2.4.0, a user with Write but not Admin permission on a shared child project can detach it from its parent hierarchy by submitting parentprojectid equal to 0 to POST /api/v1/projects/project. The Project.CanUpdate...

CVE-2026-55064 Vikunja incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0

Vikunja is an open-source self-hosted task management platform. From 2.3.0 until 2.4.0, a user with Write but not Admin permission on a shared child project can detach it from its parent hierarchy by submitting parentprojectid equal to 0 to POST /api/v1/projects/project. The Project.CanUpdate...

GHSA-F27P-PW2P-9PR4 Vikunja has a project duplication bypasses write-permission check on the target parent project

Summary The project-duplication endpoint fails to enforce write access to the target parent project. Any authenticated non-link-share user can duplicate a project they can read into any parent project on the instance, regardless of whether they have write access to that parent — injecting an...

Vikunja has a project duplication bypasses write-permission check on the target parent project

Summary The project-duplication endpoint fails to enforce write access to the target parent project. Any authenticated non-link-share user can duplicate a project they can read into any parent project on the instance, regardless of whether they have write access to that parent — injecting an...

CVE-2026-54766

Vikunja , an open-source self-hosted task management platform, has an authorization bypass in its project duplication endpoint (PUT /api/v1/projects/{project}/duplicate). The flaw in ProjectDuplicate.CanCreate (pkg/models/project_duplicate.go) calls parent.CanCreate on an unhydrated Project struc...

EUVD-2026-67830

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/projectduplicate.go allows an authenticated user who can read a source project to place its duplicate beneath an arbitrary target parent project...