{"api_version":"1","generated_at":"2026-09-05T10:54:56+00:00","cve":"CVE-2026-63464","urls":{"html":"https://cve.report/CVE-2026-63464","api":"https://cve.report/api/cve/CVE-2026-63464.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63464","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63464"},"summary":{"title":"Nebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private`","description":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.6.0 to before version 0.7.2, non-admin operators (role user) can set allow_private: true on their own managed webhook subscription (POST/PATCH /api/v1/webhook-subscriptions). No admin check exists on this field. At delivery time, allow_private switches the dispatcher to an unguarded HTTP client, bypassing the private/loopback/link-local SSRF guard — letting a low-privilege operator make the server request internal addresses. 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This issue has been patched in version 0.7.2."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-04T19:44:10.117Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-7rx3-5wx3-5v76","tags":["x_refsource_CONFIRM"],"url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-7rx3-5wx3-5v76"},{"name":"https://github.com/forgekeep/nebula-mesh/commit/f3c54530e388dd21763e548923426e60a8e93ff0","tags":["x_refsource_MISC"],"url":"https://github.com/forgekeep/nebula-mesh/commit/f3c54530e388dd21763e548923426e60a8e93ff0"},{"name":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.7.2","tags":["x_refsource_MISC"],"url":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.7.2"}],"source":{"advisory":"GHSA-7rx3-5wx3-5v76","discovery":"UNKNOWN"},"title":"Nebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private`"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-63464","datePublished":"2026-09-04T19:44:10.117Z","dateReserved":"2026-07-16T21:37:45.768Z","dateUpdated":"2026-09-04T19:44:10.117Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 20:17:24","lastModifiedDate":"2026-09-04 20:17:24","problem_types":["CWE-862","CWE-918","CWE-862 CWE-862: Missing Authorization","CWE-918 CWE-918: Server-Side Request Forgery (SSRF)"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63464","Ordinal":"1","Title":"Nebula-mesh allows non-admin operators to disable webhook SSRF p","CVE":"CVE-2026-63464","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63464","Ordinal":"1","NoteData":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.6.0 to before version 0.7.2, non-admin operators (role user) can set allow_private: true on their own managed webhook subscription (POST/PATCH /api/v1/webhook-subscriptions). No admin check exists on this field. At delivery time, allow_private switches the dispatcher to an unguarded HTTP client, bypassing the private/loopback/link-local SSRF guard — letting a low-privilege operator make the server request internal addresses. This issue has been patched in version 0.7.2.","Type":"Description","Title":"Nebula-mesh allows non-admin operators to disable webhook SSRF p"}]}}}