CVE-2026-40304

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Source
https://cve.org/CVERecord?id=CVE-2026-40304
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40304.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-40304
Aliases
Downstream
Related
Published
2026-04-17T21:04:23Z
Modified
2026-10-16T02:59:08Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records
Details

zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL (the marker for admin-created global frontends), the condition short-circuits to false and allows the deletion to proceed without any ownership verification. A non-admin user who knows a global frontend token can call DELETE /api/v2/unaccess with any of their own environment IDs and permanently delete the global frontend, taking down all public shares routed through it. Version 2.0.1 patches the issue.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-284",
        "CWE-863"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40304.json"
}
References

Affected packages

Git / github.com/openziti/zrok

Affected ranges

Type
GIT
Repo
https://github.com/openziti/zrok
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
69b9b8dd6d96be15639338414574aa5003f5f8f2
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.0.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "original_tag":  "v2.0.1",
            "range":  [
                {
                    "fixed":  "69b9b8dd6d96be15639338414574aa5003f5f8f2"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "cpe":  "cpe:2.3:a:netfoundry:zrok:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.0.1"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Affected versions

v0.*
v0.2.0
v0.2.0.1
v0.2.0.2
v0.2.0.3
v0.2.0.4
v0.2.1
v0.2.10
v0.2.11
v0.2.12
v0.2.13
v0.2.14
v0.2.15
v0.2.16
v0.2.17
v0.2.18
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.2.9
v0.3.0
v0.3.0-rc1
v0.3.0-rc2
v0.3.0-rc3
v0.3.0-rc4
v0.3.0-rc5
v0.3.0-rc6
v0.3.1
v0.3.2
v0.3.4
v0.3.5
v0.3.5-rc1
v0.3.6
v0.4.0
v0.4.10
v0.4.11
v0.4.12
v0.4.13
v0.4.14
v0.4.15
v0.4.16
v0.4.17
v0.4.18
v0.4.19
v0.4.2
v0.4.20
v0.4.21
v0.4.22
v0.4.23
v0.4.24
v0.4.25
v0.4.26
v0.4.27
v0.4.28
v0.4.29
v0.4.3
v0.4.30
v0.4.31
v0.4.32
v0.4.33
v0.4.34
v0.4.35
v0.4.36
v0.4.37
v0.4.38
v0.4.39
v0.4.4
v0.4.40
v0.4.41
v0.4.42
v0.4.43
v0.4.44
v0.4.45
v0.4.46
v0.4.47
v0.4.48
v0.4.49
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.4.9
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.1.0
v1.1.1
v1.1.10
v1.1.11
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.1.8
v2.*
v2.0.0
v2.0.0-rc5
v2.0.0-rc6
v2.0.0-rc7
v2.0.0-rc8
v2.0.0-rc9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40304.json"