CVE-2026-48039

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Source
https://cve.org/CVERecord?id=CVE-2026-48039
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48039.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48039
Aliases
Published
2026-08-07T19:29:39Z
Modified
2026-10-25T02:30:56Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Meta Ads MCP: Unauthenticated HTTP MCP Tool Execution Leaks Operator Meta Access Token
Details

Meta Ads MCP is a Model Context Protocol (MCP) server that lets AI assistants run Meta Ads. Prior to version 1.0.109, AuthInjectionMiddleware.dispatch() at http_auth_integration.py:272 unconditionally forwards unauthenticated Streamable HTTP requests to downstream MCP tool handlers without issuing a 401 response, allowing any network-reachable caller to invoke MCP tools without authentication. When no per-request credential is present, tool handlers fall back to the META_ACCESS_TOKEN environment variable, and when the downstream Meta Graph API call fails, api.py:263–269 serialises the raw httpx request URL—including the operator's access_token as a query parameter—into the JSON-RPC response body, delivering the credential to the unauthenticated caller. Version 1.0.109 fixes the issue.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-287"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48039.json"
}
References

Affected packages

Git / github.com/pipeboard-co/meta-ads-mcp

Affected ranges

Type
GIT
Repo
https://github.com/pipeboard-co/meta-ads-mcp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
14d7371d4ed77b1e9bb04ff1d00e94e00eba32a7
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.0.109"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "original_tag":  "1.0.109",
            "range":  [
                {
                    "fixed":  "14d7371d4ed77b1e9bb04ff1d00e94e00eba32a7"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.0.109"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

0.*
0.10.0
0.10.1
0.10.2
0.10.3
0.10.4
0.10.5
0.10.6
0.10.7
0.10.9
0.11.0
0.11.1
0.11.2
0.11.3
0.11.4
0.11.5
0.11.6
0.3.10
0.3.7
0.3.9
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.4.5
0.4.6
0.4.7
0.4.8
0.4.9
0.5.0
0.6.0
0.7.0
0.7.1
0.7.10
0.7.2
0.7.3
0.7.4
0.7.5
0.7.6
0.7.7
0.7.8
0.7.9
0.8.0
0.9.0
0.9.1
0.9.2
0.9.3
1.*
1.0.0
1.0.1
1.0.10
1.0.102
1.0.103
1.0.104
1.0.106
1.0.107
1.0.108
1.0.11
1.0.12
1.0.13
1.0.14
1.0.15
1.0.16
1.0.17
1.0.18
1.0.19
1.0.2
1.0.20
1.0.21
1.0.22
1.0.23
1.0.24
1.0.25
1.0.26
1.0.27
1.0.28
1.0.29
1.0.3
1.0.30
1.0.31
1.0.32
1.0.33
1.0.34
1.0.35
1.0.36
1.0.38
1.0.39
1.0.4
1.0.40
1.0.41
1.0.42
1.0.43
1.0.44
1.0.45
1.0.46
1.0.47
1.0.48
1.0.49
1.0.5
1.0.50
1.0.51
1.0.52
1.0.53
1.0.54
1.0.55
1.0.56
1.0.57
1.0.58
1.0.59
1.0.6
1.0.60
1.0.61
1.0.62
1.0.63
1.0.64
1.0.65
1.0.66
1.0.67
1.0.68
1.0.69
1.0.7
1.0.70
1.0.71
1.0.72
1.0.73
1.0.74
1.0.75
1.0.76
1.0.77
1.0.78
1.0.79
1.0.8
1.0.80
1.0.81
1.0.83
1.0.84
1.0.85
1.0.86
1.0.87
1.0.88
1.0.9
v1.*
v1.0.1
v1.0.100
v1.0.101
v1.0.82
v1.0.89
v1.0.90
v1.0.91
v1.0.92
v1.0.93
v1.0.94
v1.0.95
v1.0.96
v1.0.97
v1.0.98
v1.0.99

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48039.json"