{"answers":{"affected":"1 open source package ship an affected version, including chalk-plus-ts.","exploited":"There is no known exploitation of MAL-2026-5710 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-2026-5710 is a malicious package in chalk-plus-ts, published on 12 Jun 2026."},"fix_prompt":"MAL-2026-5710 is a malicious package: chalk-plus-ts (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-2026-5710/ (Markdown: https://insights.sbomify.com/MAL-2026-5710/index.md)","id":"MAL-2026-5710","markdown":"https://insights.sbomify.com/MAL-2026-5710/index.md","name":"MAL-2026-5710","record":{"aliases":["GHSA-247v-x9qw-cc59"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"package.json declares postinstall=`node lib/utils/index.js`, which spawns a detached child process running lib/utils/smtp-connection/index.js. That script fetches https://www.jsonkeeper.com/b/QHDXR (a mutable, anonymous JSON paste host) and passes the response's `cookie` field directly into `new Function('require', data.cookie)(require)`, executing attacker-controlled JavaScript with full Node privileges on every installer machine. The detached child with ignored stdio is designed to suppress visibility of the activity. The package additionally ships lib/utils/smtp-connection/parse.js, which exposes an AES-256-CBC decryption helper with a hardcoded key and IV — consistent with a staged loader for decoding subsequent payloads delivered through the same channel. Identity is laundered: the package name `chalk-plus-ts` impersonates the popular `chalk` package, the main entry is a verbatim copy of nodemailer.js, the author field is set to nodemailer's real maintainer (Andris Reinman), and the description field is unrelated React Training boilerplate — all to lure installs from multiple ecosystems.\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 chalk-plus-ts (npm)","id":"MAL-2026-5710","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":"chalk-plus-ts","purl":"pkg:npm/chalk-plus-ts","source":"MAL-2026-5710"}],"products":null,"published":"2026-06-12","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-2026-5710/"}