CVE-2026-48025

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-1510 IBM Concert 1.0 through 3.0.0 is vulnerable to Information Disclosure via Heap Inspection. CWE-244
• CVE-2025-70873 An information disclosure issue in the zipfileInflate function in the zipfile extension… CWE-244
• CVE-2026-20039 A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security… CWE-244
• CVE-2025-33101 IBM Concert 1.0.0 through 2.1.0 could allow an attacker to obtain sensitive information… CWE-244