{"answers":{"affected":"1 open source package ship an affected version, including dolyame-ui-flag.","exploited":"There is no known exploitation of MAL-2026-13155 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-2026-13155 is a malicious package in dolyame-ui-flag, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-13155 is a malicious package: dolyame-ui-flag (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-2026-13155/ (Markdown: https://insights.sbomify.com/MAL-2026-13155/index.md)","id":"MAL-2026-13155","markdown":"https://insights.sbomify.com/MAL-2026-13155/index.md","name":"MAL-2026-13155","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 loads _vendor.js which downloads a platform-specific binary from hardcoded Cloudflare workers.dev hosts (oob-worker.cf10{1,2,3}-*.workers.dev) with a DNS-TXT chunked base64 fallback resolved via sdk.dl.wel1.ru, writes it to /tmp or the Windows Temp directory under a disguised name (.cache_\u003chex\u003e or dotnet_diag_\u003chex\u003e.exe), chmods 755, and spawns it detached via /bin/sh -c \"\u003cpath\u003e \u0026\" or cmd.exe /c start /b. Destination hostnames and dangerous APIs are assembled by array-join and string concatenation (e.g. require(\"child_\"+\"process\"), fs[\"chmod\"+\"Sync\"]) to hinder pattern-matching. A second, structurally identical dropper is shipped in lib/telemetry.js under an 'Analytics SDK' label, providing a backup payload vector. The advertised purpose (a UI flag component) has no relationship to fetching and executing opaque native binaries from anonymous Workers hosts.","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 dolyame-ui-flag (npm)","id":"MAL-2026-13155","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":"dolyame-ui-flag","purl":"pkg:npm/dolyame-ui-flag","source":"MAL-2026-13155"}],"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-2026-13155/"}