Vulnerability Description
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.7, internal/pki/resolver.go:36-64 constructs a CAManager with the plaintext ed25519.PrivateKey after unwrapping via the master key; internal/pki/ca.go:13-16 stores it. Callers at internal/api/enroll.go:116, internal/api/updates.go:297, and internal/api/mobile_bundle.go:40 use the manager for one Sign() and drop the reference on function return — but the underlying slice contents are not wiped before release. The keystore package's contract (internal/keystore/keystore.go doc: "Callers MUST zeroise the returned plaintext DEK as soon as it is no longer needed") is not met by the CAManager consumer. Decrypted CA private keys persist in process heap until Go's GC scavenges the underlying slice — minutes to hours under load, indefinitely on idle servers. This issue has been patched in version 0.3.7.
Related Weaknesses (CWE)
References
- https://github.com/forgekeep/nebula-mesh/commit/bca1d5914fbaf3517d3b86145a802c00
- https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.7
- https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-8h84-fhqq-q58v
FAQ
What is CVE-2026-48025?
CVE-2026-48025 is a documented vulnerability. nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.7, internal/pki/resolver.go:36-64 constructs a CAManager with the plaintext ed25519.Priva...
How severe is CVE-2026-48025?
CVSS scoring is not yet available for CVE-2026-48025. Check NVD for updates.
Is there a patch for CVE-2026-48025?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.