Vulnerability Description
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.3, every /ui/* POST / PUT / PATCH / DELETE route processes the request as soon as the session cookie validates. SameSite=Lax on the session cookie prevents most cross-site form submits but does not protect: top-level form-submit navigations from third-party pages (some browsers still send Lax cookies on top-level POSTs); same-registrable-domain attackers (sibling-subdomain XSS, subdomain takeover); the GET /ui/logout route, which a third-party <img src=".../ui/logout"> can force-trigger. This issue has been patched in version 0.3.3.
Related Weaknesses (CWE)
References
- https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.3
- https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-273q-qgh5-wrj6
- https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-273q-qgh5-wrj6
FAQ
What is CVE-2026-47725?
CVE-2026-47725 is a documented vulnerability. nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.3, every /ui/* POST / PUT / PATCH / DELETE route processes the request as soon as the ses...
How severe is CVE-2026-47725?
CVSS scoring is not yet available for CVE-2026-47725. Check NVD for updates.
Is there a patch for CVE-2026-47725?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.