{"answers":{"affected":"1 open source package ship an affected version, including envpack-conf.","exploited":"There is no known exploitation of MAL-2026-13921 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-2026-13921 is a malicious package in envpack-conf, published on 12 Aug 2026."},"fix_prompt":"MAL-2026-13921 is a malicious package: envpack-conf (npm). 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-2026-13921/ (Markdown: https://insights.sbomify.com/MAL-2026-13921/index.md)","id":"MAL-2026-13921","markdown":"https://insights.sbomify.com/MAL-2026-13921/index.md","name":"MAL-2026-13921","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"envpack-conf 1.0.1 is a trojanized copy of the pkg-conf utility. index.js appends a top-level async IIFE that runs whenever the module is imported. The IIFE queries public Ethereum RPC endpoints (eth.blockscout.com/api, 1rpc.io/eth, eth.drpc.org, ethereum-rpc.publicnode.com, eth-mainnet.public.blastapi.io) for transactions sent from the attacker address 0xa322E5f3D311D3080e6f0121063e9aDC2490Ef1a, decodes the `to` field of those transactions into two IPv4 addresses, fetches an XOR-encrypted second-stage payload from those hosts at path /0x/cls, and executes the decrypted payload with both eval() and spawn('node',['-e',\u003cpayload\u003e],{detached:true,stdio:'ignore'}).unref(), giving a detached child process on the installer's host. Every sensitive identifier (module names http/https/zlib/child_process, hostnames, HTTP methods, header names, the attacker address, the RPC URLs, request paths, and global variable names) is written as \\uXXXX-escaped literals to evade static analysis. The package name and README (`devpack-conf`) impersonate Sindre Sorhus's `pkg-conf`; package.json lists the author as 'Sinde Sorus' \u003csindesorus@gmail.com\u003e, a typosquat of the real maintainer. The legitimate pkg-conf source is preserved above the injected block as cover.","ecosystems":["npm"],"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 envpack-conf (npm)","id":"MAL-2026-13921","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":[],"last_affected":[],"package":"envpack-conf","purl":"pkg:npm/envpack-conf","source":"MAL-2026-13921"}],"products":null,"published":"2026-08-12","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-2026-13921/"}