{"answers":{"affected":"1 open source package ship an affected version, including py-base58.","exploited":"There is no known exploitation of MAL-2026-10193 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-10193 is a malicious package in py-base58, published on 12 Jul 2026."},"fix_prompt":"MAL-2026-10193 is a malicious package: py-base58 (PyPI). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-10193/ (Markdown: https://insights.sbomify.com/MAL-2026-10193/index.md)","id":"MAL-2026-10193","markdown":"https://insights.sbomify.com/MAL-2026-10193/index.md","name":"MAL-2026-10193","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"py-base58 2.1.3 masquerades as a pure-Python base58 encoder but on first import of the top-level base58 package decodes a ~640KB base64-embedded Linux ELF binary from base58/_payload.py, writes it to ~/.config/.npm-cache/ under a name masquerading as a system daemon (e.g. systemd-journald, nvidia-persistenced, docker-containerd), chmods it 0777, launches it, and installs a user crontab entry re-executing it every 12 hours. The __init__.py hook then removes the package's own.dist-info/.egg-info directories from site-packages so `pip list` and `pip show` no longer reveal the package. Strings in the dropped binary identify it as a cryptocurrency-wallet stealer targeting BIP-39 mnemonics and keystore files for Phantom, MetaMask, Ledger, and Exodus, and paths including ~/.config/solana/id.json, ~/.ethereum/keystore, and ~/.foundry/keystores; harvested material is encrypted to an embedded attacker RSA public key and uploaded to public file hosts api.pinata.cloud (IPFS pinning), uguu.se, temp.sh, and transfer.sh. The package's declared purpose (base58 encoding) has no legitimate need to drop a native binary, schedule cron persistence, or scrub its own installation metadata.\n\nThe package embeds an executable stealing cryptocurrency wallets data. During import, code saves the executable under a name suggesting system utility and configures cron to run it periodically. The exfiltrated data is encrypted using embedded RSA code before uploading to file-sharing services or IPFS.\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\nCampaign: 2026-07-py-base58\n\nReasons (based on the campaign):\n\n - crypto-related\n\n - exfiltration-crypto\n\n - persistence","ecosystems":["PyPI"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in py-base58 (PyPI)","id":"MAL-2026-10193","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"PyPI","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":[],"last_affected":[],"package":"py-base58","purl":"pkg:pypi/py-base58","source":"MAL-2026-10193"}],"products":null,"published":"2026-07-12","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-10193/"}