TC-2025-0019 · VSCODE · PACKAGE
[email protected]
CVE-2025-54136 (MCPoison, CVSS 7.8): once a repository .cursor/mcp.json entry is approved, subsequent git pull modifications to its command/args execute silently without re-prompting.
Signed ledger verdict
TC-2025-0019
Known bad (exit 2)
vscode:[email protected]
IOC & scope: vscode:[email protected] (CVE-2025-54136 MCPoison). Verified by human review and signed into the CC-BY 4.0 OSV v1.6.0 feed.
Run live in Counter Workbench
Signed in /feed.json (.sig).
Deterministic capability profile and taxonomy mapping.
Every artifact in the threat.cafe ledger is profiled across eight execution vectors and mapped to the OWASP Top 10 for Agentic Applications (ASI01-ASI10) and Agentic Skills & Tools (AST01-AST10).
8-Vector Capability X-Ray (ABOM)
-
1. Filesystem
Sensitive paths touched:
.cursor/mcp.json -
2. Environment
Variables harvested:
None observed -
3. Network
Outbound egress domains:
None observed -
4. Subprocess
Process execution primitives:
cmd.exe /c calc.exe (silent post-approval mutation) -
5. Lifecycle
Install / startup hooks:
None observed -
6. OAuth / MCP
Declared scopes:
None observed -
7. Obfuscation
Encoding / steganography:
None observed -
8. Provenance
Attestation status:
vulnerable_release_cve_2025_54136
Governance & detector mapping
- OWASP Agentic ASI (2026): ASI02 (Tool Misuse & Exploitation), ASI04 (Agentic Supply Chain Vulnerabilities), ASI05 (Unexpected Code Execution (RCE))
- OWASP Agentic AST (2026): AST01 (Malicious MCP Servers), AST05 (Sandbox Escape & Local Execution)
- Deterministic rules matched:
CONFIG_05_REPO_HOOK_RCE, RUNTIME_03_HASH_PIN_LOCK
Version scoping & related records
- TC-2025-0018 (vscode:[email protected]): status
known_bad— CVE-2025-54135 (CurXecute, CVSS 8.6): indirect prompt injection from external MCP server or untrusted file ove
Local CLI verification
$ threat-cafe-hook check "vscode:[email protected]" [threat.cafe] known_bad: vscode:[email protected] (TC-2025-0019) Reason: CVE-2025-54136 (MCPoison, CVSS 7.8): once a repository .cursor/mcp.json entry is approved, Source: https://nvd.nist.gov/vuln/detail/CVE-2025-54136 (credited to Check Point Research)
OSV v1.6.0 machine-readable record
Included in /feed.json under CC-BY 4.0 license and verified by /feed.json.sig.
{
"schema_version": "1.6.0",
"id": "TC-2025-0019",
"modified": "2025-08-12T10:00:00Z",
"published": "2025-08-12T10:00:00Z",
"summary": "CVE-2025-54136 (MCPoison, CVSS 7.8): once a repository .cursor/mcp.json entry is approved, subsequent git pull modifications to its command/args execute silently without re-prompting.",
"affected": [
{
"package": {
"ecosystem": "vscode",
"name": "anysphere.cursor"
},
"versions": [
"1.2.1"
]
}
],
"credits": [
{
"name": "Check Point Research",
"type": "FINDER"
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54136"
},
{
"type": "WEB",
"url": "https://threat.cafe/incidents/tc-2025-0019/"
}
],
"database_specific": {
"target": "vscode:[email protected]",
"kind": "package",
"verdict": "known_bad",
"ioc": "vscode:[email protected] (CVE-2025-54136 MCPoison)",
"artifact_sha256": "f6a093fde5fd1c306e7cb63c75dca0be63759710b423529cc6cca4c766c3c920",
"owasp_asi": [
"ASI02",
"ASI04",
"ASI05"
],
"owasp_ast": [
"AST01",
"AST05"
],
"rules_matched": [
"CONFIG_05_REPO_HOOK_RCE",
"RUNTIME_03_HASH_PIN_LOCK"
],
"abom": {
"fs_sensitive": [
".cursor/mcp.json"
],
"env_harvest": [],
"net_egress": [],
"proc_exec": [
"cmd.exe /c calc.exe (silent post-approval mutation)"
],
"install_hooks": [],
"oauth_scopes": [],
"obfuscation": [],
"provenance": "vulnerable_release_cve_2025_54136"
},
"license": "CC-BY-4.0",
"record_digest": "sha256:397ba8b677f94d3d85749af6991a853ec03c16b092e0e0ac70bbc43282b655ea",
"release_signature_url": "https://threat.cafe/feed.json.sig"
}
}
Have additional IOCs or a maintainer remediation update for TC-2025-0019?
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