{"answers":{"affected":"1 open source package ship an affected version, including mastraqqq.","exploited":"There is no known exploitation of MAL-2026-5913 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-2026-5913 is a malicious package in mastraqqq, published on 16 Jun 2026."},"fix_prompt":"MAL-2026-5913 is a malicious package: mastraqqq (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-2026-5913/ (Markdown: https://insights.sbomify.com/MAL-2026-5913/index.md)","id":"MAL-2026-5913","markdown":"https://insights.sbomify.com/MAL-2026-5913/index.md","name":"MAL-2026-5913","record":{"aliases":["GHSA-7vj9-63m9-3x7f"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package is published as `mastraqqq` but bundles a verbatim clone of the legitimate `mastra` CLI: the embedded package metadata declares `name: \"mastra\", version: \"1.13.0\"` with Mastra's homepage and repository, and the README is the upstream Mastra CLI README. The npm-published manifest under the `mastraqqq` name (a 3-character-suffix edit of `mastra`) adds a single unrelated runtime dependency, `caspian-day-js@^1.11.22`, which is never imported anywhere in the bundled `dist/` output. Installing `mastraqqq` therefore silently pulls `caspian-day-js` — an attacker-chosen package whose contents are outside this tarball — into the consumer's install graph under cover of a Mastra impersonation. The combination of impersonation (identical bundled name/version/README/code) plus an unexplained, never-referenced extra dependency is the canonical namespace-abuse delivery shape: the lure is the typosquat, the payload arrives via the smuggled dep.\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 mastraqqq (npm)","id":"MAL-2026-5913","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":"mastraqqq","purl":"pkg:npm/mastraqqq","source":"MAL-2026-5913"}],"products":null,"published":"2026-06-16","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-2026-5913/"}