claims-replace-url-params (npm) · Malicious Code
Affects claims-replace-url-paramsSource GCVE Database
Malicious package : remove claims-replace-url-params and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:16 UTC
Malicious package
Published to npm · OSV MAL-2026-12641
What to do
Remove claims-replace-url-params 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-replace-url-params | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The npm package claims-replace-url-params version 35.3.2 contains malicious code that downloads and executes arbitrary payloads from suspicious external hosts. The package's main module loads a platform-specific asset by fetching base64-encoded data from multiple hardcoded domains, writing it to temporary files, setting executable permissions, and spawning it as a detached process. This behavior is obfuscated to evade static detection and no integrity checks are performed on the downloaded payloads. The malicious activity is hidden under an 'analytics SDK' label, and the delivery hosts are unrelated to the package's declared purpose.