{"answers":{"affected":"1 open source package ship an affected version, including devplatform-react-form.","exploited":"There is no known exploitation of MAL-2026-12735 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-2026-12735 is a malicious package in devplatform-react-form, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12735 is a malicious package: devplatform-react-form (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-2026-12735/ (Markdown: https://insights.sbomify.com/MAL-2026-12735/index.md)","id":"MAL-2026-12735","markdown":"https://insights.sbomify.com/MAL-2026-12735/index.md","name":"MAL-2026-12735","record":{"aliases":["GHSA-wj9c-c8rr-53vv"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require('devplatform-react-form'), index.js loads _adapter.js which fetches a platform-specific native binary from hardcoded Cloudflare Workers endpoints (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT chunked fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes the payload to /tmp or %TEMP% under deceptive names (.cache_\u003chex\u003e, dotnet_diag_\u003chex\u003e.exe), chmods it 0o755, and spawns it detached via cp.spawn('/bin/sh', ['-c', fp + ' \u0026'], {detached:true, stdio:'ignore'}).unref(), using a stamp file to avoid re-execution. Host and API strings are assembled from split fragments (e.g. [\"oob-worker.cf102-baf.wo\",\"rk\",\"ers.de\",\"v\"].join(\"\"), require('child_'+'process')) to evade static analysis. lib/telemetry.js contains a parallel dropper under an 'Analytics SDK' cover story using the same base64-chunk-decode + chmod 0o755 + cp.spawn('/bin/sh',...) pattern. The package advertises itself as a React form library but ships no form code; the fetched binary is unrelated to any documented purpose and delivers full-host code execution to any process that imports the module.\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 devplatform-react-form (npm)","id":"MAL-2026-12735","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":"devplatform-react-form","purl":"pkg:npm/devplatform-react-form","source":"MAL-2026-12735"}],"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-2026-12735/"}