{"answers":{"affected":"1 open source package ship an affected version, including tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events.","exploited":"There is no known exploitation of MAL-2026-12263 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-2026-12263 is a malicious package in tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12263 is a malicious package: tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events (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-2026-12263/ (Markdown: https://insights.sbomify.com/MAL-2026-12263/index.md)","id":"MAL-2026-12263","markdown":"https://insights.sbomify.com/MAL-2026-12263/index.md","name":"MAL-2026-12263","record":{"aliases":["GHSA-4mrm-8v83-27p9"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"index.js requires./_polyfill on load, which selects a platform-specific endpoint, fetches an opaque binary from runtime-assembled Cloudflare Workers hostnames (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS TXT fallback via *.dl.well1.site, writes it to /tmp or %TEMP% under disguised names (.cache_\u003chex\u003e on Unix, dotnet_diag_\u003chex\u003e.exe on Windows), chmods 0755, and detaches it via /bin/sh -c or cmd /c start. C2 domains are assembled from fragment arrays joined at runtime; require('child_process') is string-split; the drop path mimics system diagnostic components; the entire flow is wrapped under an 'Analytics SDK / telemetry' cover story. lib/telemetry.js ships a duplicate dropper (base64-decoded chunks, chmod 0755, cp.spawn('/bin/sh',['-c', filePath + ' \u0026'])) that mirrors the same attack primitives. Any require() of this package executes attacker-controlled code on the installer's host.\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 tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events (npm)","id":"MAL-2026-12263","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":"tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events","purl":"pkg:npm/tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events","source":"MAL-2026-12263"}],"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-2026-12263/"}