claims-patch-url (npm) · Malicious Code
Affects claims-patch-urlSource GCVE Database
Malicious package : remove claims-patch-url and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:14 UTC
Malicious package
Published to npm · OSV MAL-2026-12631
What to do
Remove claims-patch-url 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 |
|---|---|---|
| npmclaims-patch-url | Affected
| Fixed in– |
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Description
The npm package claims-patch-url version 35.3.9 contains malicious code that downloads and executes a binary payload from multiple Cloudflare Worker hosts. The package's main API is an empty shell class, with the actual functionality being a dropper that writes and executes a binary under disguised filenames in temporary directories. The payload download uses covert DNS-TXT fallback channels and runtime hostname assembly to evade detection. Environment variables are checked to gate execution, and the package appears to be a typosquat or decoy with no legitimate dependencies.