CVE-2026-63464

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Source

https://cve.org/CVERecord?id=CVE-2026-63464

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63464.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-63464

Aliases

Published

2026-09-04T19:44:10.117Z

Modified

2026-09-06T03:46:14.902124752Z

Severity

7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator

Summary

Nebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private`

Details

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.6.0 to before version 0.7.2, non-admin operators (role user) can set allowprivate: true on their own managed webhook subscription (POST/PATCH /api/v1/webhook-subscriptions). No admin check exists on this field. At delivery time, allowprivate switches the dispatcher to an unguarded HTTP client, bypassing the private/loopback/link-local SSRF guard — letting a low-privilege operator make the server request internal addresses. This issue has been patched in version 0.7.2.

Database specific

{
    "cwe_ids": [
        "CWE-862",
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63464.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/forgekeep/nebula-mesh

Affected ranges

Type

GIT

Repo

https://github.com/forgekeep/nebula-mesh

Events

Introduced

9487a7521c94b14973dcf67efb69faae5c8001e9

Fixed

65f3107f887648e23f3bf1a7c9ecc397d958c1ad

Database specific

Show details

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0.6.0"
        },
        {
            "fixed": "0.7.2"
        }
    ]
}

Affected versions

v0.*

v0.6.0

v0.7.0

v0.7.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63464.json"