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🛡️ MAL-2026-3653 — web

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in @design-system-coopeuch/web (npm)

Source: amazon-inspector

Package @design-system-coopeuch/[email protected] is a dependency-confusion squat of an internal-looking scope, published at an inflated 999.x version to override any private registry copy. package.json declares a preinstall hook that runs cb.js, which collects installer host identifiers (os.hostname(), cwd, install directory, id, uname -a, OS release info, and the full list of process.env key names) and POSTs them as JSON over cleartext HTTP to a hardcoded bare IP, http://157.173.126.113:8443/dep-confusion (cb.js line 20: hostname: "157.173.126.113", port: 8443, path: "/dep-confusion", method: "POST"). The beacon fires automatically on npm install without user consent. Although the package description self-labels as an "authorized bug bounty PoC," any unintended installer has their host fingerprint exfiltrated to an attacker-controlled endpoint. The combination of internal-scope impersonation, inflated version, and install-time beacon to a bare IP is the canonical dependency-confusion attack shape.

Source: ossf-package-analysis

The OpenSSF Package Analysis project identified '@design-system-coopeuch/web' @ 999.0.0 (npm) as malicious.

It is considered malicious because:

  • The package executes one or more commands associated with malicious behavior.

Affected software

MAL-2026-3653 is recorded against 1 package.

  • @design-system-coopeuch/web

Timeline and source

Published on 13 May 2026 and last revised on 15 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)
www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-05-13
Updated 2026-08-20
Modified 2026-05-15
Fix URL N/A

Affected Packages

Software From version Fixed in
@design-system-coopeuch/web

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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