{"items":[{"id":"NVI-00013861","kind":"vulnerability","title":"Vikunja has an incomplete fix for CVE-2026-35595: Write-only user can detach shared project from parent hierarchy via parent_project_id=0","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-44v6-7fxq-vgf4","CVE-2026-55064"],"plain_summary":"GitHub lists this reviewed advisory for code.vikunja.io/api. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-12062a4600779262f84a5198b17b416a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T16:39:09.000Z","value":"4.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-12062a4600779262f84a5198b17b416a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-12062a4600779262f84a5198b17b416a","url":"https://github.com/advisories/GHSA-44v6-7fxq-vgf4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-44v6-7fxq-vgf4","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-12062a4600779262f84a5198b17b416a"],"technology":"code.vikunja.io/api","known_exclusions":[],"conditions_summary":"## Summary\n\nThe fix for CVE-2026-35595 (project re-parenting privilege escalation) only gates reparent operations when `parent_project_id > 0`. A user with Write (but not Admin) permission on a shared child project can detach it from its parent by sending `parent_project_id: 0`, bypassing the Admin requirement. This severs the recursive CTE permission inheritance chain, potentially disrupting the project hierarchy and affecting inherited access for other collaborators.\n\n## Affected component\n\n- **Package:** go-vikunja/vikunja\n- **Affected versions:** v2.3.0 and later (including latest unstable v2.3.0-246-9852aff4). The fix for CVE-2026-35595 was introduced in v2.3.0 but left the detach-to-root case unpatched. Fixed in 2.4.0.\n- **Tested on:** Vikunja v2.3.0 (Docker image vikunja/vikunja:2.3.0) AND latest unstable (vikunja/vikunja:unstable, v2.3.0-246-9852aff4 built 2026-04-27)\n\n## Technical detail\n\n### Vulnerable code\n\n**File: `pkg/models/project.go` (lines 1009-1041)**\n```go\n// GHSA-2vq4-854f-5c72 / CVE-2026-35595: the recursive permission CTE\n// cascades Admin from any owned ancestor, so moving a shared child\n// under an attacker-owned root grants Admin on the child. Require\n// Ad","public_affected_ranges":[">= 2.3.0, < 2.4.0"]}],"null_published_at":"2026-11-02T10:00:37.162Z","source_updated_at":"2026-08-28T16:39:09.000Z","source_disclosed_at":"2026-08-28T16:39:08.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-02T09:56:23.004Z"}],"next_cursor":null,"snapshot_revision":"42594"}