CVE-2026-54450

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Source
https://cve.org/CVERecord?id=CVE-2026-54450
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54450.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54450
Aliases
Downstream
Related
Published
2026-09-15T15:47:39Z
Modified
2026-09-17T03:47:10Z
Severity
  • 2.9 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
ToolHive: SSRF guard misses IPv6 NAT64 ranges (64:ff9b::/96, 64:ff9b:1::/48), allowing metadata/internal access behind a NAT64 gateway
Details

ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol (MCP) servers. Prior to 0.29.1, networking.IsPrivateIP in pkg/networking/utilities.go omits the IPv6 NAT64 prefixes 64:ff9b::/96 and 64:ff9b:1::/48, so NAT64 addresses embedding private, loopback, or link-local IPv4 targets are classified as public and allowed. The most direct attacker-controlled path begins when an external OAuth client supplies a client_id URL that CIMDStorageDecorator.GetClient routes through FetchClientMetadataDocument in pkg/oauthproto/cimd/fetch.go; protectedDialerControl in pkg/networking/http_client.go and validateHost in pkg/skills/gitresolver/reference.go share the defective classification but use operator-controlled or user-controlled destinations. On a ToolHive host behind a NAT64/DNS64 gateway, the gateway translates an allowed address such as 64:ff9b:1::a9fe:a9fe to 169.254.169.254, permitting blind probing of internal TCP or TLS reachability. The attacker-controlled CIMD path requires HTTPS, verifies certificates, and does not reflect response bodies, so the established impact is an internal reachability oracle rather than metadata credential exfiltration; the webhook client is not affected because it does not use this IP guard. This issue is fixed in version 0.29.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54450.json"
}
References

Affected packages

Git / github.com/stacklok/toolhive

Affected ranges

Type
GIT
Repo
https://github.com/stacklok/toolhive
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
26912af453d2040787983dbc9ab93a9019ec0468
Fixed
83e9eaec177c85c791a337b8c99d2e43c06904a1
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.29.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

toolhive-operator-0.*
toolhive-operator-0.0.10
toolhive-operator-0.0.11
toolhive-operator-0.0.3
toolhive-operator-0.0.4
toolhive-operator-0.0.5
toolhive-operator-0.0.6
toolhive-operator-0.0.7
toolhive-operator-0.0.8
toolhive-operator-0.0.9
toolhive-operator-0.1.0
toolhive-operator-0.1.5
toolhive-operator-0.1.8
toolhive-operator-0.2.0
toolhive-operator-0.2.1
toolhive-operator-0.2.11
toolhive-operator-0.2.12
toolhive-operator-0.2.13
toolhive-operator-0.2.14
toolhive-operator-0.2.15
toolhive-operator-0.2.16
toolhive-operator-0.2.17
toolhive-operator-0.2.18
toolhive-operator-0.2.19
toolhive-operator-0.2.2
toolhive-operator-0.2.20
toolhive-operator-0.2.21
toolhive-operator-0.2.22
toolhive-operator-0.2.23
toolhive-operator-0.2.24
toolhive-operator-0.2.25
toolhive-operator-0.2.26
toolhive-operator-0.2.3
toolhive-operator-0.2.4
toolhive-operator-0.2.5
toolhive-operator-0.2.6
toolhive-operator-0.2.8
toolhive-operator-0.3.0
toolhive-operator-0.3.1
toolhive-operator-0.3.2
toolhive-operator-0.3.4
toolhive-operator-0.3.5
toolhive-operator-0.3.6
toolhive-operator-0.3.7
toolhive-operator-0.4.0
toolhive-operator-0.5.0
toolhive-operator-0.5.1
toolhive-operator-0.5.10
toolhive-operator-0.5.11
toolhive-operator-0.5.12
toolhive-operator-0.5.13
toolhive-operator-0.5.14
toolhive-operator-0.5.15
toolhive-operator-0.5.16
toolhive-operator-0.5.17
toolhive-operator-0.5.18
toolhive-operator-0.5.19
toolhive-operator-0.5.2
toolhive-operator-0.5.20
toolhive-operator-0.5.21
toolhive-operator-0.5.22
toolhive-operator-0.5.23
toolhive-operator-0.5.24
toolhive-operator-0.5.25
toolhive-operator-0.5.26
toolhive-operator-0.5.27
toolhive-operator-0.5.28
toolhive-operator-0.5.3
toolhive-operator-0.5.4
toolhive-operator-0.5.5
toolhive-operator-0.5.6
toolhive-operator-0.5.7
toolhive-operator-0.5.8
toolhive-operator-0.5.9
toolhive-operator-crds-0.*
toolhive-operator-crds-0.0.10
toolhive-operator-crds-0.0.100
toolhive-operator-crds-0.0.101
toolhive-operator-crds-0.0.102
toolhive-operator-crds-0.0.103
toolhive-operator-crds-0.0.104
toolhive-operator-crds-0.0.105
toolhive-operator-crds-0.0.106
toolhive-operator-crds-0.0.11
toolhive-operator-crds-0.0.12
toolhive-operator-crds-0.0.13
toolhive-operator-crds-0.0.14
toolhive-operator-crds-0.0.15
toolhive-operator-crds-0.0.16
toolhive-operator-crds-0.0.17
toolhive-operator-crds-0.0.18
toolhive-operator-crds-0.0.19
toolhive-operator-crds-0.0.21
toolhive-operator-crds-0.0.22
toolhive-operator-crds-0.0.23
toolhive-operator-crds-0.0.24
toolhive-operator-crds-0.0.25
toolhive-operator-crds-0.0.26
toolhive-operator-crds-0.0.27
toolhive-operator-crds-0.0.29
toolhive-operator-crds-0.0.3
toolhive-operator-crds-0.0.30
toolhive-operator-crds-0.0.31
toolhive-operator-crds-0.0.32
toolhive-operator-crds-0.0.33
toolhive-operator-crds-0.0.34
toolhive-operator-crds-0.0.35
toolhive-operator-crds-0.0.36
toolhive-operator-crds-0.0.38
toolhive-operator-crds-0.0.39
toolhive-operator-crds-0.0.4
toolhive-operator-crds-0.0.40
toolhive-operator-crds-0.0.41
toolhive-operator-crds-0.0.42
toolhive-operator-crds-0.0.43
toolhive-operator-crds-0.0.44
toolhive-operator-crds-0.0.45
toolhive-operator-crds-0.0.46
toolhive-operator-crds-0.0.47
toolhive-operator-crds-0.0.48
toolhive-operator-crds-0.0.49
toolhive-operator-crds-0.0.5
toolhive-operator-crds-0.0.50
toolhive-operator-crds-0.0.51
toolhive-operator-crds-0.0.52
toolhive-operator-crds-0.0.53
toolhive-operator-crds-0.0.54
toolhive-operator-crds-0.0.55
toolhive-operator-crds-0.0.56
toolhive-operator-crds-0.0.57
toolhive-operator-crds-0.0.58
toolhive-operator-crds-0.0.59
toolhive-operator-crds-0.0.6
toolhive-operator-crds-0.0.60
toolhive-operator-crds-0.0.61
toolhive-operator-crds-0.0.62
toolhive-operator-crds-0.0.63
toolhive-operator-crds-0.0.64
toolhive-operator-crds-0.0.65
toolhive-operator-crds-0.0.66
toolhive-operator-crds-0.0.67
toolhive-operator-crds-0.0.68
toolhive-operator-crds-0.0.69
toolhive-operator-crds-0.0.7
toolhive-operator-crds-0.0.70
toolhive-operator-crds-0.0.71
toolhive-operator-crds-0.0.72
toolhive-operator-crds-0.0.73
toolhive-operator-crds-0.0.74
toolhive-operator-crds-0.0.75
toolhive-operator-crds-0.0.76
toolhive-operator-crds-0.0.77
toolhive-operator-crds-0.0.78
toolhive-operator-crds-0.0.79
toolhive-operator-crds-0.0.8
toolhive-operator-crds-0.0.80
toolhive-operator-crds-0.0.81
toolhive-operator-crds-0.0.82
toolhive-operator-crds-0.0.83
toolhive-operator-crds-0.0.84
toolhive-operator-crds-0.0.85
toolhive-operator-crds-0.0.86
toolhive-operator-crds-0.0.88
toolhive-operator-crds-0.0.89
toolhive-operator-crds-0.0.9
toolhive-operator-crds-0.0.90
toolhive-operator-crds-0.0.91
toolhive-operator-crds-0.0.92
toolhive-operator-crds-0.0.93
toolhive-operator-crds-0.0.94
toolhive-operator-crds-0.0.95
toolhive-operator-crds-0.0.96
toolhive-operator-crds-0.0.97
toolhive-operator-crds-0.0.98
toolhive-operator-crds-0.0.99
v0.*
v0.0.1
v0.0.10
v0.0.11
v0.0.12
v0.0.13
v0.0.14
v0.0.15
v0.0.16
v0.0.17
v0.0.18
v0.0.19
v0.0.2
v0.0.20
v0.0.21
v0.0.22
v0.0.23
v0.0.24
v0.0.25
v0.0.26
v0.0.27
v0.0.28
v0.0.29
v0.0.3
v0.0.30
v0.0.31
v0.0.32
v0.0.33
v0.0.34
v0.0.35
v0.0.36
v0.0.37
v0.0.38
v0.0.39
v0.0.4
v0.0.40
v0.0.41
v0.0.42
v0.0.43
v0.0.44
v0.0.45
v0.0.46
v0.0.47
v0.0.48
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.0.9
v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.1.9
v0.10.0
v0.10.1
v0.10.2
v0.11.0
v0.11.1
v0.11.2
v0.11.3
v0.12.0
v0.12.1
v0.12.2
v0.12.3
v0.12.4
v0.12.5
v0.13.0
v0.13.1
v0.14.0
v0.14.1
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.19.0
v0.2.0
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
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.2.9
v0.20.0
v0.21.0
v0.22.0
v0.23.0
v0.23.1
v0.24.0
v0.24.1
v0.25.0
v0.26.0
v0.26.1
v0.27.0
v0.27.1
v0.27.2
v0.28.0
v0.28.1
v0.28.2
v0.28.3
v0.29.0
v0.3.0
v0.3.1
v0.3.10
v0.3.11
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.5.0
v0.5.1
v0.5.2
v0.6.0
v0.6.1
v0.6.10
v0.6.11
v0.6.12
v0.6.13
v0.6.14
v0.6.15
v0.6.16
v0.6.17
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.6.8
v0.6.9
v0.7.0
v0.7.1
v0.7.2
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.9.0
v0.9.1
v0.9.2
v0.9.3
v0.9.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54450.json"