{"answers":{"affected":"1 open source package ship an affected version, including @wrenfield/viem.","exploited":"There is no known exploitation of MAL-2026-10571 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-2026-10571 is a malicious package in @wrenfield/viem, published on 14 Jul 2026."},"fix_prompt":"MAL-2026-10571 is a malicious package: @wrenfield/viem (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-2026-10571/ (Markdown: https://insights.sbomify.com/MAL-2026-10571/index.md)","id":"MAL-2026-10571","markdown":"https://insights.sbomify.com/MAL-2026-10571/index.md","name":"MAL-2026-10571","record":{"aliases":["GHSA-pm4g-83cj-7858"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"@wrenfield/viem republishes the viem codebase under an unrelated npm scope while keeping the upstream homepage (https://viem.sh) and repository (wevm/viem) metadata. The package itself contains no install lifecycle hooks and its CJS main is a pure re-export of viem's public API with no top-level side effects, network I/O, eval, child_process, or filesystem access. The notable change versus upstream is in package.json line 172, which rewrites the `abitype` dependency to `npm:@wrenfield/abitype@1.2.4` — a load-bearing transitive substituted with a same-scope sibling package. Consumers who install @wrenfield/viem (whether by name confusion against the legitimate `viem` package or via social engineering) silently pull in @wrenfield/abitype in place of the legitimate abitype, giving the @wrenfield scope owner control over a core ABI-encoding dependency used throughout viem. The conveyance shape (verbatim upstream code + sibling-scope dependency redirection + retained upstream branding) is the namespace-abuse pattern, but the actual payload, if any, lives in @wrenfield/abitype rather than this package. Routing to human review so a reviewer can inspect @wrenfield/abitype and decide whether to publish a coordinated advisory.\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 @wrenfield/viem (npm)","id":"MAL-2026-10571","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":"@wrenfield/viem","purl":"pkg:npm/%40wrenfield/viem","source":"MAL-2026-10571"}],"products":null,"published":"2026-07-14","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-2026-10571/"}