{"id":"GHSA-w7w5-5gcp-38rw","revision":null,"records":[{"revision":"2bbe42c10aa24ff88f6f6ce7aa6faac1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47723","aliases":[],"title":"nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)","description":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase. Version 0.3.1 fixes the issue.","state":0,"publishedAt":"2026-07-23T20:17:26.478+00:00","modifiedAt":"2026-07-24T13:54:01.417+00:00","affected":[{"ecosystem":"Vendor product","name":"nebula-mesh","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"juev\",\n                    \"product\": \"nebula-mesh\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.3.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw","https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1","https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47723","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47723","identifiers":["CVE-2026-47723"]},"retained":false,"historicalAffected":[]},{"revision":"6800a2a709cc4c9fbc867fe7308c8aee","observedAt":"2026-10-25T12:17:26.301+00:00","statement":{"source":"nvd","id":"CVE-2026-47723","aliases":[],"title":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Conten…","description":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase. Version 0.3.1 fixes the issue.","state":0,"publishedAt":"2026-07-23T21:17:04.34+00:00","modifiedAt":"2026-10-24T13:10:00.147+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.1,"severity":"HIGH"}],"references":["https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1","https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1","https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-47723","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-1021"],"productCriteria":[],"sourceDates":{"published":"2026-07-23T21:17:04.340","lastModified":"2026-10-24T13:10:00.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-47723","identifiers":["CVE-2026-47723"]},"retained":false,"historicalAffected":[]},{"revision":"51359170dbdc45a5b6147127e87c7bfc","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-w7w5-5gcp-38rw","aliases":["CVE-2026-47723","GO-2026-5698"],"title":"nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)","description":"None of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase.\n\n## Impact\nThe admin UI signs CA certificates, mints API keys (returned inline once per page), displays TOTP QR codes, and exposes operator-management forms. Missing `X-Frame-Options: DENY` / `frame-ancestors 'none'` is a real clickjacking lever against an admin browsing `/ui/operators/*` or `/ui/cas/*`. Missing `X-Content-Type-Options: nosniff` allows MIME confusion on any user-supplied content surface. Missing HSTS on TLS deployments leaves a downgrade window.\n\n## Affected\nAll released versions up to v0.3.0.\n\n## Suggested fix\nA single response-header middleware mounted at the chi router root in both `/ui/*` and `/api/*` paths:\n\n```go\nfunc securityHeadersMiddleware(next http.Handler) http.Handler {\n    return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {\n        h := rw.Header()\n        h.Set(\"Content-Security-Policy\",\n            \"default-src 'self'; frame-ancestors 'none'; base-uri 'none'; form-action 'self'\")\n        h.Set(\"X-Content-Type-Options\", \"nosniff\")\n        h.Set(\"Referrer-Policy\", \"same-origin\")\n        h.Set(\"X-Frame-Options\", \"DENY\")  // belt-and-braces; CSP frame-ancestors is the modern path\n        if r.TLS != nil {\n            h.Set(\"Strict-Transport-Security\", \"max-age=31536000; includeSubDomains\")\n        }\n        next.ServeHTTP(rw, r)\n    })\n}\n```\n\nThe inline `<script>` in `layout.html` for CSRF wiring (added in the CSRF advisory) will need either a nonce, a hash in CSP, or external-file extraction. Easiest path: a nonce per request (`crypto/rand`, base64) injected into both the CSP header and the script's `nonce=\"\"` attribute.","state":0,"publishedAt":"2026-06-08T23:08:54+00:00","modifiedAt":"2026-06-25T23:11:13.4582015+00:00","affected":[{"ecosystem":"Go","name":"github.com/juev/nebula-mesh","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.3.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/juev/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw","https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1","https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1","https://github.com/juev/nebula-mesh"],"sourceUrl":"https://github.com/advisories/GHSA-w7w5-5gcp-38rw","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-w7w5-5gcp-38rw","identifiers":["GHSA-w7w5-5gcp-38rw","CVE-2026-47723","GO-2026-5698"]},"retained":false,"historicalAffected":[]},{"revision":"d07cd5e9c3c548e3aa8625f148501c85","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5698","aliases":["CVE-2026-47723","GHSA-w7w5-5gcp-38rw"],"title":"nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.) in github.com/juev/nebula-mesh","description":"nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.) in github.com/juev/nebula-mesh","state":0,"publishedAt":"2026-06-25T22:34:38+00:00","modifiedAt":"2026-06-25T23:01:38.7781882+00:00","affected":[{"ecosystem":"Go","name":"github.com/juev/nebula-mesh","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.3.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/juev/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw","https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1","https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5698","license":"OSV · upstream source license applies","key":"osv:GO-2026-5698","identifiers":["GO-2026-5698","CVE-2026-47723","GHSA-w7w5-5gcp-38rw"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-26T05:26:56.6538334+00:00","complete":true,"records":1756,"lastAttemptAt":"2026-10-26T05:26:56.6538334+00:00","lastSuccessAt":"2026-10-26T05:26:56.7986454+00:00","error":null,"lastVerifiedAt":"2026-10-26T05:26:56.7986482+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-5ba1945314e042c2ced14b33f3680fa71692812d925544312b218f5eb8a26e71-bc703d32c448acb7291b43dd467a47b987ad86f105a430a0e30b03cf6e038792","complete":true,"records":414069,"lastAttemptAt":"2026-10-26T05:25:21.6088408+00:00","lastSuccessAt":"2026-10-26T05:25:21.5943862+00:00","error":null,"lastVerifiedAt":"2026-10-26T05:25:21.6088408+00:00","snapshotPublishedAt":"2026-10-26T04:31:21+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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Not a global EPSS backfill.","generation":"2026-10-26T05:26:56.6538334+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-26T05:26:56.6538334+00:00","lastSuccessAt":"2026-10-26T05:26:56.7998442+00:00","error":null,"lastVerifiedAt":"2026-10-26T05:26:56.799845+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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