{"id":"CVE-2026-47723","aliases":["GHSA-w7w5-5gcp-38rw","GO-2026-5698"],"url":"https://o3.security/vulnerability/CVE-2026-47723","summary":"nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)","details":"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.","published":"2026-07-23T20:17:26.478Z","modified":"2026-08-12T03:51:48.808664692Z","cvss":null,"epss":{"score":0.00303,"percentile":0.23011,"asOf":"2026-08-20"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/juev/nebula-mesh","fixedVersion":"0.3.1"}],"fix":{"url":"https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1","label":"forgekeep/nebula-mesh@b45fda5"},"references":[{"type":"WEB","url":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47723.json"},{"type":"ADVISORY","url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47723"},{"type":"FIX","url":"https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:48.808664692Z"}}