GCVE-110-OSM-2026-1554

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published April 8, 2026

Executes a preinstall hook at install time that fires a callback to an OAST (Out-of-band Application Security Testing) server at dwpmxufjontejuultjhe0dcw571lqawco.oast.fun, confirming installation on victim machines and enabling attacker enumeration of environments where the package runs. preinstall hook runs `node index.js` which sends an HTTP request to http://dwpmxufjontejuultjhe0dcw571lqawco.oast.fun/ — an attacker-controlled OAST callback domain used to fingerprint install-time code execution.

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

5.4/10

Medium · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected Products

Vendor	Product	Versions	Platforms
unknown	a2a-chat-canvas	all versions (affected)	—

References

Malicious npm package: a2a-chat-canvas

advisory

vendor

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