{"cve":"CVE-2026-63464","nvd":{"published":"2026-09-04T20:17:24.730","modified":"2026-09-08T21:05:26.920","status":"Deferred","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. This issue has been patched in version 0.7.2.","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:N/A:N","score":7.7},"cwes":["CWE-862","CWE-918"],"references":["https://github.com/forgekeep/nebula-mesh/commit/f3c54530e388dd21763e548923426e60a8e93ff0","https://github.com/forgekeep/nebula-mesh/releases/tag/v0.7.2","https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-7rx3-5wx3-5v76","https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-7rx3-5wx3-5v76"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:03.409947763+00:00"},"epss":{"cve":"CVE-2026-63464","score":0.00464,"percentile":0.4018,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-7rx3-5wx3-5v76","url":"https://osv.dev/vulnerability/GHSA-7rx3-5wx3-5v76","summary":"Nebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private`","modified":"2026-09-05T11:55:21.182453615Z","packages":[{"ecosystem":"Go","name":"github.com/forgekeep/nebula-mesh","purl":"pkg:golang/github.com/forgekeep/nebula-mesh","ranges":[">=0.6.0 <0.7.2"],"fixed":["0.7.2"]}]},{"id":"GO-2026-5985","url":"https://osv.dev/vulnerability/GO-2026-5985","summary":"Nebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private` in github.com/forgekeep/nebula-mesh","modified":"2026-09-05T11:55:21.182453615Z","packages":[{"ecosystem":"Go","name":"github.com/forgekeep/nebula-mesh","purl":"pkg:golang/github.com/forgekeep/nebula-mesh","ranges":[">=0.6.0 <0.7.2"],"fixed":["0.7.2"]}]}],"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."]}