CVE-2026-61699

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Source
https://cve.org/CVERecord?id=CVE-2026-61699
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61699.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-61699
Aliases
Downstream
Related
Published
2026-09-04T19:43:28.633Z
Modified
2026-09-05T11:45:32.391958149Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
nebula-mesh: Certificate revocation is never enforced at the mesh
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-299",
        "CWE-672"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61699.json"
}
References

Affected packages

Git / github.com/forgekeep/nebula-mesh

Affected ranges

Type
GIT
Repo
https://github.com/forgekeep/nebula-mesh
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
af6d0d4aabb69e4a66441fffc77cf36f954689fa
Database specific
Show details 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.7.1"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.1.2
v0.2.0
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.4.0
v0.5.0
v0.6.0
v0.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61699.json"