Detections
Analytics

SCA: security update for github.com/forgekeep/nebula-mesh (GHSA-cm26-5974-52h8)

high Tenable Self-Hosted Container Security Plugin ID 444720

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 0.7.1, revocation
 is the only in-band mechanism that isolates a compromised/offboarded host from a Nebula mesh. Because the
 blocklist never reaches any peer's config.yml, a Blocked host retains full overlay reachability to every
 peer under its CA (and internal services on the mesh) for up to 30d (agent) / 365d (mobile). An attacker
 who exfiltrates host.key+host.crt can run stock slackhq/nebula directly, ignore the agent's 403/410 poll
 responses, and stay connected after the operator revokes the host. Operator-visible state (UI shows
 blocked, audit log records it) is misleading. This issue has been patched in version 0.7.1.
 (CVE-2026-61699)

Solution

Update the github.com/forgekeep/nebula-mesh library and its related packages to version 0.7.1 or later.

See Also

https://github.com/advisories/GHSA-cm26-5974-52h8

Plugin Details

Severity: High

ID: 444720

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: Medium

Score: 4.3

Percentile: 53.69

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-61699

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

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-2026-61699