constructor-blocks-renderer-landings (npm) · Malicious Code
Affects constructor-blocks-renderer-landingsSource GCVE Database
Malicious package : remove constructor-blocks-renderer-landings and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:21 UTC
Malicious package
Published to npm · OSV MAL-2026-12663
What to do
Remove constructor-blocks-renderer-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-renderer-landings | Affected
| Fixed in– |
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Description
The npm package 'constructor-blocks-renderer-landings' version 35.2.5 contains malicious code that, upon import, downloads and executes a platform-specific executable from hardcoded Cloudflare Workers hosts. It writes the executable to temporary directories with disguised filenames, sets executable permissions, and runs it detached via shell commands. If HTTPS fetching is blocked, it uses a DNS-TXT covert channel to retrieve the payload. A second similar dropper module is embedded in the package, using obfuscated code to evade static analysis.