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SCA: security update for github.com/forgekeep/nebula-mesh (GHSA-2p2f-px33-4vv5)

high Tenable Cloud Security Plugin ID 444709

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 VPN. Prior to version 0.3.8, the web
 handler renderMobileBundle passes the real *pki.CAResolver directly into mobilebundle.Build. Inside Build,
 resolver.LoadByID decrypts the CA's ed25519 private key into a *pki.CAManager, but Build never calls
 CAManager.Wipe() on any return path. As a result, when a mobile-bundle request goes through the web UI and
 Build returns — especially on error (missing network, invalid prefix, DB error, signing failure) — the
 plaintext CA private key remains on the Go heap, unwiped, until garbage collection. An attacker able to
 read process memory (core dump, swap, memory-scraping) can recover the CA signing key, which would allow
 minting arbitrary host certificates for the mesh. The API handler already does this correctly: it loads
 the CAManager, defer caMgr.Wipe(), and wraps it in caManagerResolver. Only the web path is affected. This
 issue has been patched in version 0.3.8. (CVE-2026-53604)

Solution

Update the github.com/forgekeep/nebula-mesh library and its related packages to version 0.3.8 or later.

See Also

https://github.com/advisories/GHSA-2p2f-px33-4vv5

Plugin Details

Severity: High

ID: 444709

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 7/15/2026

Updated: 9/7/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

Vendor

Vendor Severity: High

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-2026-53604

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: High

Base Score: 7.1

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-53604