CVE-2026-53709

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Source
https://cve.org/CVERecord?id=CVE-2026-53709
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53709.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53709
Aliases
  • GHSA-m8rv-5m6m-32ff
Published
2026-10-13T14:32:12Z
Modified
2026-11-04T02:48:04Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
MCP Context Forge: Hardcoded default JWT_SECRET_KEY shipped in source and .env.example enables pre-authentication platform admin token forgery
Details

MCP Context Forge is an MCP gateway and administrative platform. Prior to 1.0.2, mcpgateway/config.py and .env.example ship a known JWT_SECRET_KEY, while verify_jwt_token() accepts HS256 tokens signed with that key and get_current_user() creates a platform administrator when the token subject matches PLATFORM_ADMIN_EMAIL and REQUIRE_USER_IN_DB is false. A remote unauthenticated attacker can therefore mint accepted administrator tokens without a database account. While the vulnerable signing key remains configured and the platform-admin bootstrap remains enabled, forged access survives password rotation, account deletion, and session revocation, allowing administrative disclosure, modification, and service disruption. This issue is fixed in version 1.0.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1188",
        "CWE-287",
        "CWE-321",
        "CWE-798"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53709.json"
}
References

Affected packages

Git / github.com/ibm/mcp-context-forge

Affected ranges

Type
GIT
Repo
https://github.com/ibm/mcp-context-forge
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e0967e65cd381374682751da630e2cc2fb3a9c34
Fixed
2af690f894b6e35f5f21190fdab1505f023a5272
Fixed
ece0c811e11646bed43c677ef676860e5a2a3763
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.0.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "2af690f894b6e35f5f21190fdab1505f023a5272"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v1.0.2",
            "range": [
                {
                    "fixed": "ece0c811e11646bed43c677ef676860e5a2a3763"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.2.0
v0.3.0
v0.3.1
v0.4.0
v0.5.0
v0.6.0
v1.*
v1.0.0
v1.0.0-RC-3
v1.0.0-RC2
v1.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53709.json"