CVE-2026-49258

{"id": "CVE-2026-49258", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49258", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-28T19:21:26.834734Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "juev", "product": "nebula-mesh", "versions": [{"status": "affected", "version": "< 0.3.6"}]}]}], "published": "2026-07-28T19:17:36.000", "references": [{"url": "https://github.com/forgekeep/nebula-mesh/pull/161", "source": "security-advisories@github.com"}, {"url": "https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-c6v2-3ffm-vcmc", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-639"}, {"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "Nebula Mesh is a self-hosted control plane for the Slack Nebula mesh VPN. In versions 0.3.5 and below, the web UI (/ui/*) does not apply the per-operator CA scoping employed by the JSON API. This was partially addressed by GHSA-598g-h2vc-h5vg, but the changes were not implemented in the web read/mutation surface. Any authenticated non-admin operator (for example, one created via self-registration or OIDC) can access resources belonging to other operators. The host create/edit/mobile-bundle/network-create paths and all CA-management routes were already correctly scoped. A malicious operator could block or delete any other operator's host, or read any operator's hosts and networks. This issue has been fixed in version 0.3.6."}, {"lang": "es", "value": "Nebula Mesh es un plano de control autoalojado para la VPN de malla Slack Nebula. En las versiones 0.3.5 e inferiores, la interfaz de usuario web (/ui/*) no aplica el alcance de CA por operador empleado por la API JSON. Esto fue abordado parcialmente por GHSA-598g-h2vc-h5vg, pero los cambios no fueron implementados en la superficie de lectura/mutaci\u00f3n web. Cualquier operador autenticado no administrador (por ejemplo, uno creado mediante autorregistro u OIDC) puede acceder a recursos pertenecientes a otros operadores. Las rutas de creaci\u00f3n/edici\u00f3n de host/paquete m\u00f3vil/creaci\u00f3n de red y todas las rutas de gesti\u00f3n de CA ya estaban correctamente delimitadas. Un operador malicioso podr\u00eda bloquear o eliminar el host de cualquier otro operador, o leer los hosts y redes de cualquier operador. Este problema ha sido solucionado en la versi\u00f3n 0.3.6."}], "lastModified": "2026-10-23T23:10:00.157", "sourceIdentifier": "security-advisories@github.com"}