constructor-blocks-landings (npm) · Malicious Code
Affects constructor-blocks-landingsSource GCVE Database
Malicious package : remove constructor-blocks-landings and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:22 UTC
Malicious package
Published to npm · OSV MAL-2026-12661
What to do
Remove constructor-blocks-landings 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 |
|---|---|---|
| npmconstructor-blocks-landings | Affected
| Fixed in– |
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Description
The npm package 'constructor-blocks-landings' version 35.5.7 contains malicious code that downloads and executes a binary payload specific to the OS and architecture. The payload is fetched from dynamically assembled hostnames and a DNS-TXT fallback, saved with disguised filenames, given executable permissions, and run detached from the main process. The package uses obfuscation techniques to evade static analysis, including computed property names and a fake telemetry module. This behavior is characteristic of an attacker dropper rather than legitimate telemetry.