VDB
GCVE-110-OSM-2026-5201
GCVE-110-OSM-2026-5201
Advisory PublishedCVSS 9.6/10
Malicious package detected. Behaviors: data exfiltration, code execution, obfuscated code, install-time execution.
Entrypoint: dist/scripts/preinstall.js (install-hook: node ./dist/scripts/preinstall.js)
Exfil: https://cdn.sencha.com/reext/ext/ext-Ext.Panel.156.46 (reconstructed, recovery: reconstructed in dist/reext.es.js)
Payload: dist/reext.es.js
Secondary files: dist/reext.umd.js
Key findings:
- Reconstructed Obfuscated URL in dist/reext.es.js: "https://cdn.sencha.com/reext/ext/ext-Ext.Panel.156.46"
- Reconstructed Obfuscated URL in dist/reext.umd.js: "https://cdn.sencha.com/reext/ext/ext-Ext.Panel.156.46"
- Dynamic Code Execution in dist/reext.es.js: "exec(e)"
- Data Encoding for Exfiltration in dist/reext.es.js: "Buffer.from(e).toString("base64")"
- Dynamic Base64 Decoding in dist/reext.es.js: "atob(e)"
IOCs:
- ipv4: 7.0.0.156
- ipv6: C::
- urls: https://www.sencha.com/products/extjs/, https://create-react-app.dev/docs/getting-started/, https://store.sencha.com/, https://support.sencha.com/, https://docs.sencha.com/extjs/7.8.0/modern/Ext.Button.html (+8 more)
- domains: www.sencha.com, create-react-app.dev, sencha.com, store.sencha.com, support.sencha.com (+6 more)
- emails: sales@sencha.com, lisa@simpsons.com, bart@simpsons.com, homer@simpsons.com, marge@simpsons.com (+5 more)
- payloadFileHash: 3ce05b0169938d9732e3db415f6ea88b875777746555582e65d4e467eaaa12b3
Weaknesses (CWE)
CWE-506Embedded Malicious Code
Risk Scores
CVSS 3.1
9.6/10
Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| unknown | @gusmano/reext | 1.0.528 (affected) | — |
Aliases
Explore Further
Investigate this vulnerability in the interactive console or download the raw GCVE record.