{"cve":"CVE-2026-55513","nvd":{"published":"2026-09-04T20:17:23.857","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 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollment_token_ttl security setting and per-network network_config.enrollment_token_ttl overrides. API host creation and token-regeneration paths use the configured TTL resolver, but POST /ui/hosts hardcodes now.Add(24 * time.Hour) for newly minted agent enrollment tokens. In deployments that intentionally reduce enrollment-token lifetime, any authenticated operator who can create a host through the Web UI can still mint a bearer enrollment token valid for about 24 hours. This issue has been patched in version 0.5.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-613"],"references":["https://github.com/forgekeep/nebula-mesh/commit/514006029e09f1991122b86a80e7b25970bcfa98","https://github.com/forgekeep/nebula-mesh/releases/tag/v0.5.0","https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-g4x6-jcvr-9m3g","https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-g4x6-jcvr-9m3g"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:03.409947763+00:00"},"epss":{"cve":"CVE-2026-55513","score":0.0032,"percentile":0.25015,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g4x6-jcvr-9m3g","url":"https://osv.dev/vulnerability/GHSA-g4x6-jcvr-9m3g","summary":"nebula-mesh: Web UI host creation ignores configured enrollment token TTL and mints 24-hour bearer enrollment tokens","modified":"2026-07-23T18:11:42.592571840Z","packages":[{"ecosystem":"Go","name":"github.com/forgekeep/nebula-mesh","purl":"pkg:golang/github.com/forgekeep/nebula-mesh","ranges":[">=0.3.0 <0.5.0"],"fixed":["0.5.0"]}]},{"id":"GO-2026-5987","url":"https://osv.dev/vulnerability/GO-2026-5987","summary":"Insecure enrollment token TTL in nebula-mesh in github.com/forgekeep/nebula-mesh","modified":"2026-07-23T18:00:23.848180658Z","packages":[{"ecosystem":"Go","name":"github.com/forgekeep/nebula-mesh","purl":"pkg:golang/github.com/forgekeep/nebula-mesh","ranges":[">=0.4.0 <0.5.0"],"fixed":["0.5.0"]},{"ecosystem":"Go","name":"github.com/juev/nebula-mesh","purl":"pkg:golang/github.com/juev/nebula-mesh","ranges":[">=0.3.0"],"fixed":[]}]}],"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."]}