{"answers":{"affected":"1 open source package ship an affected version, including devplatform-spa-route-tree.","exploited":"There is no known exploitation of MAL-2026-12783 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-2026-12783 is a malicious package in devplatform-spa-route-tree, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12783 is a malicious package: devplatform-spa-route-tree (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-2026-12783/ (Markdown: https://insights.sbomify.com/MAL-2026-12783/index.md)","id":"MAL-2026-12783","markdown":"https://insights.sbomify.com/MAL-2026-12783/index.md","name":"MAL-2026-12783","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 devplatform-spa-route-tree, index.js loads _loader.js which downloads a platform-specific binary from hostnames assembled via array-join string splits — Cloudflare Workers subdomains (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT chunked fallback under *.dl.wel1.ru. The fetched bytes are written to /tmp/.cache_\u003chex\u003e on Unix or %TEMP%\\dotnet_diag_\u003chex\u003e.exe on Windows (masquerading as.NET diagnostic tooling), chmod 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' \u0026'], {detached:true}) or the Windows cmd equivalent. Destination hostnames are split across array literals and reassembled at runtime to evade static matching, and environment-variable checks for DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK are used as cover framing. The fetched binary is opaque, unpinned, unverified, and served from non-publisher infrastructure.","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-route-tree (npm)","id":"MAL-2026-12783","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-route-tree","purl":"pkg:npm/devplatform-spa-route-tree","source":"MAL-2026-12783"}],"products":null,"published":"2026-08-05","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-2026-12783/"}