Which versions of solana-web3-alt are malicious?

The following PyPI versions of solana-web3-alt are flagged malicious: 0.37.0, 0.37.1. Treat any of these as compromised.

How do I remediate solana-web3-alt if I installed it?

solana-web3-alt 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.

I already installed solana-web3-alt — how do I know if it already compromised me?

If solana-web3-alt 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.

Is solana-web3-alt part of a known attack campaign?

Yes — solana-web3-alt is associated with the 2026-05-foundry-utils campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find solana-web3-alt across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for solana-web3-alt (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging solana-web3-alt across your stack and pipelines.

Malicious package

solana-web3-altPyPI

Malicious code in solana-web3-alt (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-3835

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall solana-web3-alt

What this malware does

In specific environments, the package triggers silent code execution during installation. The code to execute is not included in the package.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-05-foundry-utils

Reasons (based on the campaign):

dependency-confusion
other

Malicious versions

2 flagged

0.37.00.37.1

Indicators of compromise (SHA-256)

b3846bb2c80cb984e05f37cddc24548b73067be9aaca692e401a06f7c323e7b9

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for solana-web3-alt (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging solana-web3-alt across your stack and pipelines.
If you installed it — respond
solana-web3-alt 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.
Did it already run?
If solana-web3-alt 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.
How O3 protects you
O3 blocks solana-web3-alt 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. solana-web3-alt on PyPI has been identified as a malicious package (versions 0.37.0, 0.37.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-05-foundry-utils

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks solana-web3-alt-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring