{"answers":{"affected":"1 open source package ship an affected version, including devplatform-spa-errors.","exploited":"There is no known exploitation of MAL-2026-13545 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-2026-13545 is a malicious package in devplatform-spa-errors, published on 7 Aug 2026."},"fix_prompt":"MAL-2026-13545 is a malicious package: devplatform-spa-errors (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-2026-13545/ (Markdown: https://insights.sbomify.com/MAL-2026-13545/index.md)","id":"MAL-2026-13545","markdown":"https://insights.sbomify.com/MAL-2026-13545/index.md","name":"MAL-2026-13545","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require() of the package, index.js unconditionally loads _loader.js, which selects a platform-specific payload path, fetches an opaque native binary from string-concatenated Cloudflare Workers subdomains (oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT chunked fallback channel to *.dl.wel1.ru, writes the bytes to a temp path disguised as dotnet_diag_\u003ctok\u003e.exe on Windows or.cache_\u003ctok\u003e on POSIX, chmods it to 0755, and spawns it detached via /bin/sh -c \"\u003cpath\u003e \u0026\" or cmd.exe /c start. Hostnames and dropped filenames are assembled at runtime from split-string arrays and framed with Analytics/telemetry SDK cover strings. lib/telemetry.js contains a duplicate copy of the dropper logic (base64-decoded chunks, chmodSync 0755, cp.spawn('/bin/sh', ['-c', filePath + ' \u0026'])) inside a decoy Sentry-like observability module. The package delivers attacker-controlled native code to the installer's host on module load, with no integrity verification and active string obfuscation to evade review.","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 devplatform-spa-errors (npm)","id":"MAL-2026-13545","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":[],"last_affected":[],"package":"devplatform-spa-errors","purl":"pkg:npm/devplatform-spa-errors","source":"MAL-2026-13545"}],"products":null,"published":"2026-08-07","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-2026-13545/"}