{"answers":{"affected":"1 open source package ship an affected version, including paychex-pdftron.","exploited":"There is no known exploitation of MAL-2026-18289 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-2026-18289 is a malicious package in paychex-pdftron, published on 25 Oct 2026."},"fix_prompt":"MAL-2026-18289 is a malicious package: paychex-pdftron (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-2026-18289/ (Markdown: https://insights.sbomify.com/MAL-2026-18289/index.md)","id":"MAL-2026-18289","markdown":"https://insights.sbomify.com/MAL-2026-18289/index.md","name":"MAL-2026-18289","record":{"aliases":["GHSA-9mgv-25w8-jwhf"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"paychex-pdftron@99.9.1 ships an empty stub (module.exports = {}) and declares its sole dependency `ltidisafe` as a bare HTTPS tarball URL (https://ltidi.storage.googleapis.com/depenconf/ltidisafe-4.0.5.tgz) rather than a registry version range. On `npm install`, npm fetches whatever bytes that URL returns and installs the resulting package, executing any lifecycle scripts it contains — with no version pin, no integrity hash, and no signature verification. The package name resembles an internal Paychex scope, the version is an implausibly high `99.9.1` (a dependency-confusion resolution tactic), the URL path segment is `depenconf`, and the host is unrelated to any legitimate Paychex or pdftron domain. The manifest alone is the attack surface: resolving this dependency pulls attacker-controlled code into the installer's build environment.\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 paychex-pdftron (npm)","id":"MAL-2026-18289","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":"paychex-pdftron","purl":"pkg:npm/paychex-pdftron","source":"MAL-2026-18289"}],"products":null,"published":"2026-10-25","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-2026-18289/"}