SCA: security update for github.com/forgekeep/nebula-mesh, github.com/juev/nebula-mesh (GHSA-8h84-fhqq-q58v)

medium Tenable Cloud Security Plugin ID 443037

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- 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. (CVE-2026-48025)

Solution

Update the github.com/forgekeep/nebula-mesh library and its related packages to version 0.3.7 or later.

Plugin Details

Severity: Medium

ID: 443037

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 6/10/2026

Updated: 7/29/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2026-48025

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2026

Vulnerability Publication Date: 6/10/2026

Reference Information

CVE: CVE-2026-48025

cwe: CWE-244

Detections

Analytics