{"cve":"CVE-2026-47724","nvd":{"published":"2026-07-23T21:17:04.477","modified":"2026-10-24T13:10:00.147","status":"Deferred","description":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: \"API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer.\" The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access — instant privilege escalation in the worst case. Version 0.3.4 fixes the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9},"cwes":["CWE-862"],"references":["https://github.com/forgekeep/nebula-mesh/commit/9d8bcd7667ecd0c2975cc71fb35a02fe131f76f2","https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-598g-h2vc-h5vg"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:27.712498749+00:00"},"epss":{"cve":"CVE-2026-47724","score":0.00481,"percentile":0.41188,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-598g-h2vc-h5vg","url":"https://osv.dev/vulnerability/GHSA-598g-h2vc-h5vg","summary":"nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation","modified":"2026-06-25T18:56:18.070614974Z","packages":[{"ecosystem":"Go","name":"github.com/juev/nebula-mesh","purl":"pkg:golang/github.com/juev/nebula-mesh","ranges":["<0.3.4"],"fixed":["0.3.4"]}]},{"id":"GO-2026-5139","url":"https://osv.dev/vulnerability/GO-2026-5139","summary":"nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation in github.com/juev/nebula-mesh","modified":"2026-06-25T18:45:25.275925121Z","packages":[{"ecosystem":"Go","name":"github.com/juev/nebula-mesh","purl":"pkg:golang/github.com/juev/nebula-mesh","ranges":["<0.3.4"],"fixed":["0.3.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}