{"items":[{"id":"NVI-00017626","kind":"vulnerability","title":"Nebula Mesh: Web UI lacks ownership checks, enabling cross-operator access to hosts and networks (read, block, delete)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c6v2-3ffm-vcmc","CVE-2026-49258"],"plain_summary":"GitHub lists this reviewed advisory for github.com/juev/nebula-mesh. 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-3296f06631362f6560c382b018cb6376"],"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":"2026-06-26T21:29:03.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3296f06631362f6560c382b018cb6376"}],"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-3296f06631362f6560c382b018cb6376","url":"https://github.com/advisories/GHSA-c6v2-3ffm-vcmc","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c6v2-3ffm-vcmc","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T19:05:04.022Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3296f06631362f6560c382b018cb6376"],"technology":"github.com/juev/nebula-mesh","known_exclusions":[],"conditions_summary":"## Summary\n\nThe web UI (`/ui/*`) does not apply the per-operator CA scoping the JSON API received for GHSA-598g-h2vc-h5vg. Any authenticated non-admin operator (for example, one created via self-registration or OIDC) can access resources belonging to other operators.\n\n## Impact\n\nA non-admin operator can:\n\n- **Block or delete any other operator's host.** `POST /ui/hosts/{id}/block` and `DELETE /ui/hosts/{id}` act on the URL `id` with no ownership check, so a non-admin can block (revoking the host's certificate via the blocklist) or delete any host in the deployment — a cross-operator denial of service.\n- **Read every operator's hosts and networks.** The dashboard, `/ui/hosts`, the host detail page, `/ui/networks` (including the create-form error re-render), and the `/ui/events` stream all return data across all operators, exposing host names, Nebula IPs, public IPs, certificate fingerprints and expiry, and network names and CIDRs.\n\nThis is the same cross-operator class as GHSA-598g; that remediation covered the JSON API but not the web read/mutation surface. The host create/edit/mobile-bundle/network-create paths and all CA-management routes were already correctly scoped.\n\nAffected ","public_affected_ranges":["<= 0.3.4"]}],"null_published_at":"2026-11-05T19:10:21.428Z","source_updated_at":"2026-06-26T21:29:03.000Z","source_disclosed_at":"2026-06-26T21:29:02.000Z","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":"2026-11-05T19:05:04.022Z"}],"next_cursor":null,"snapshot_revision":"42594"}