{"answers":{"affected":"1 open source package ship an affected version, including chai-sdk.","exploited":"There is no known exploitation of MAL-2026-6931 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-2026-6931 is a malicious package in chai-sdk, published on 7 Jul 2026."},"fix_prompt":"MAL-2026-6931 is a malicious package: chai-sdk (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-2026-6931/ (Markdown: https://insights.sbomify.com/MAL-2026-6931/index.md)","id":"MAL-2026-6931","markdown":"https://insights.sbomify.com/MAL-2026-6931/index.md","name":"MAL-2026-6931","record":{"aliases":["GHSA-xc9r-f5wv-cvxx"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require, index.js spawns a detached background node process that runs lib/initializeCaller.js. That module axios.get()s a base64-obfuscated URL (decodes to https://amethyst-lorrin-26.tiiny.site/index.json) and passes the response's `cookie` field to `new Function('require',...)` which is then invoked with the real `require`, giving the remote operator arbitrary Node.js execution inside the installer's process. The URL is stored as a base64 blob decoded via atob() and wrapped in a function named `initializeCaller` with comments framing it as routine middleware — deliberate cover for the exfiltration/execution primitive. The package is published as `chai-sdk` but its entrypoint exports an object named `pino` with pino's DEFAULT_LEVELS, messageKey, and mirror files (lib/proto.js, lib/multistream.js, lib/redaction.js), masquerading as the popular pino logger so consumers integrate it as a benign logging dependency. Import-time fetch is from an anonymous, mutable tiiny.site host with no pinning, hash, or signature — whatever JavaScript the operator serves runs with the consumer's Node privileges.\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 chai-sdk (npm)","id":"MAL-2026-6931","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":"chai-sdk","purl":"pkg:npm/chai-sdk","source":"MAL-2026-6931"}],"products":null,"published":"2026-07-07","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-2026-6931/"}