{"answers":{"affected":"1 open source package ship an affected version, including streak-bucket-lib.","exploited":"There is no known exploitation of MAL-2026-11035 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-2026-11035 is a malicious package in streak-bucket-lib, published on 23 Jul 2026."},"fix_prompt":"MAL-2026-11035 is a malicious package: streak-bucket-lib (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-2026-11035/ (Markdown: https://insights.sbomify.com/MAL-2026-11035/index.md)","id":"MAL-2026-11035","markdown":"https://insights.sbomify.com/MAL-2026-11035/index.md","name":"MAL-2026-11035","record":{"aliases":["GHSA-rg2p-8587-wx3w"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package advertises pure calendar/streak math but its main entry (index.mjs) schedules an async routine on module import via Promise.resolve().then(setTimeout(_i,0)). That routine dynamically imports fs/path/child_process/https using module names decoded from a _k lookup table through a `reverse-then-hex` unwrapper (`const _d = s =\u003e Buffer.from(s.split('').reverse().join(''), 'hex').toString()`), HTTP-GETs a remote archive to a hardcoded URL reconstructed from the same table, writes the response bytes to a per-user Windows AppData path, spawns an extractor on the archive, then invokes powershell with a script that constructs a WScript.Shell.lnk shortcut (TargetPath/WorkingDirectory/Save) in the user's Startup folder for persistence across reboots. Every operational string — module names, URL, AppData subpath components, extractor argv, and the powershell payload — is stored obfuscated in _k and only decoded at runtime. The behavior fires on any `import 'streak-bucket-lib'` with no lifecycle hook required. The declared calendar-math purpose has no need for network I/O, filesystem writes under AppData, child process execution, or powershell-authored startup shortcuts; the obfuscated destination table and dropper-plus-persistence shape identify this as a Windows stealer scaffold rather than a library.\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 streak-bucket-lib (npm)","id":"MAL-2026-11035","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":"streak-bucket-lib","purl":"pkg:npm/streak-bucket-lib","source":"MAL-2026-11035"}],"products":null,"published":"2026-07-23","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-2026-11035/"}