checkout-iframe (npm) · Malicious Code
Affects checkout-iframeSource GCVE Database
Malicious package : remove checkout-iframe and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 15:57 UTC
Malicious package
Published to npm · OSV MAL-2026-12566
What to do
Remove checkout-iframe 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 |
|---|---|---|
| npmcheckout-iframe | Affected
| Fixed in– |
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Description
The npm package 'checkout-iframe' version 35.7.1 contains malicious code that downloads and executes platform-specific native binaries from obfuscated Cloudflare Workers hosts and fallback domains. These binaries are saved under disguised filenames, given executable permissions, and launched detached from the main process. The package also includes a secondary dropper disguised as an analytics SDK that performs similar malicious actions. The package falsely advertises itself as a checkout iframe provider but has no legitimate reason to download or execute native binaries at import time.