# MAL-2026-13431: Malicious code in @itsreduxtm/unpkg-xss-test (npm) - **Type:** Malicious package - **Package:** `@itsreduxtm/unpkg-xss-test` (npm) - **Published:** 6 Aug 2026 ## What is MAL-2026-13431? MAL-2026-13431 is a malicious package in @itsreduxtm/unpkg-xss-test, published on 6 Aug 2026. ### Official description payload.js is declared as the package `main` and runs an IIFE immediately on require/import. It fetches a wordlist of Linux binary names from https://unpkg.com/@itsreduxtm/unpkg-xss-test@1.0.4/binlist.txt and issues concurrent HEAD requests to https://entretienextremejb.ca/bin/ for each entry, sourcing the traffic from the installer's machine and IP address. The package name (`unpkg-xss-test`) and GTFOBins-style wordlist shape indicate this is a browser XSS-delivered path-enumeration payload; when loaded in Node (fetch is global in Node 18+), the installer conducts the scan against a third party. This covertly weaponizes the installer's identity for reconnaissance against an unrelated site, exposing the installer to abuse reports, IP blocklisting, and potential legal complaints for unauthorized scanning. ## What should I do about MAL-2026-13431? Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed. ## Fix prompt for AI coding agents ```text MAL-2026-13431 is a malicious package: @itsreduxtm/unpkg-xss-test (npm). Every version was published to cause harm. Task: 1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies. 2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for. 3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated. 4. If the package is not used anywhere, say so and change nothing. Reference: https://insights.sbomify.com/MAL-2026-13431/ (Markdown: https://insights.sbomify.com/MAL-2026-13431/index.md) ``` ## Sources - OSV: https://osv.dev/vulnerability/MAL-2026-13431 --- From sbomify Insights: https://insights.sbomify.com/MAL-2026-13431/ Summaries are generated and may contain mistakes; the official description above is the record.