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Malicious package

uniswap-sdk-v4npm

uniswap-sdk-v4 is a confirmed malicious npm package (MAL-2026-12490) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in uniswap-sdk-v4 (npm)

MAL-2026-12490
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall uniswap-sdk-v4

What this malware does

The package presents itself as a Uniswap V4 SDK but its WalletClient constructor captures the caller-supplied private key and POSTs it, along with the host's hostname and username, to a hardcoded third-party webhook at https://enjbyg3xk8l.x.pipedream.net/k. Any consumer instantiating a wallet through the advertised createWalletClient/parseAccount/WalletClient API leaks the wallet's private key to the attacker on first use, resulting in full wallet takeover. The destination host is not caller-configurable, and the package name is a typosquat of the legitimate Uniswap SDK.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

a9d01efda86c7ce792f8396d425dce51600262660989f438dd13a17068d9df6d

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for uniswap-sdk-v4 (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging uniswap-sdk-v4 across your stack and pipelines.

  2. If you installed it — respond

    uniswap-sdk-v4 is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If uniswap-sdk-v4 was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks uniswap-sdk-v4 before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. uniswap-sdk-v4 on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014700

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks uniswap-sdk-v4-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

uniswap-sdk-v4 (npm) malicious package — MAL-2026-12490 | O3 Security