guest-app-ui (npm) · Malicious Code
Affects guest-app-uiSource GCVE Database
Malicious package : remove guest-app-ui and rotate any secrets on hosts that installed it.
Data as of 10 Jul 2026, 10:00 UTC
Malicious package
Published to npm · OSV MAL-2026-10096
What to do
Remove guest-app-ui from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmguest-app-ui | Affected
| Fixed in– |
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Description
The guest-app-ui npm package version 99.0.0 contains malicious code that executes during installation. It collects host identifiers such as hostname, user environment variables, current working directory, platform details, and internal IP addresses. This data is encoded and sent to a hardcoded external server via DNS queries and HTTP/HTTPS POST requests, with TLS verification disabled for HTTPS. The package uses a name that can cause dependency confusion, potentially leading organizations with private packages of the same name to inadvertently install this malicious public package. The malicious behavior is unconditional and not gated by any authorization checks.