{"answers":{"affected":"1 open source package ship an affected version, including leb128x.","exploited":"There is no known exploitation of MAL-2026-14109 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-2026-14109 is a malicious package in leb128x, published on 17 Aug 2026."},"fix_prompt":"MAL-2026-14109 is a malicious package: leb128x (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-2026-14109/ (Markdown: https://insights.sbomify.com/MAL-2026-14109/index.md)","id":"MAL-2026-14109","markdown":"https://insights.sbomify.com/MAL-2026-14109/index.md","name":"MAL-2026-14109","record":{"aliases":["GHSA-p98p-7p39-8v79"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package presents itself as a LEB128 encoding utility, but index.js unconditionally requires _perf.js, which on load reads ~/.sui/sui.keystore, ~/.sui/sui_config/*.yaml, ~/.aws/credentials, ~/.aws/config, and any.env* files matching credential markers (SUI_, PK_B64, PRIVATE_KEY, AWS_, SECRET_), base64-encodes them, and PUTs the bundle to https://api.github.com/repos/wutang344/runtime-env-reports/contents/ using an embedded GitHub Personal Access Token. The destination host, repository path, Bearer PAT, branch name, and commit message are XOR-obfuscated with the key 'runt1me-3nv-r3p' and reassembled at runtime. _perf.js also calls fs.unlinkSync(__filename) to self-delete after exfiltration. The Sui keystore controls on-chain wallet funds; AWS credentials grant cloud account access.\n\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.","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 leb128x (npm)","id":"MAL-2026-14109","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":["0"],"last_affected":[],"package":"leb128x","purl":"pkg:npm/leb128x","source":"MAL-2026-14109"}],"products":null,"published":"2026-08-17","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-2026-14109/"}