{"answers":{"affected":"1 open source package ship an affected version, including tinkoff-statist-browser-typed-client-investaccounting.events.templatepage.mainpage.","exploited":"There is no known exploitation of MAL-2026-12261 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-2026-12261 is a malicious package in tinkoff-statist-browser-typed-client-investaccounting.events.templatepage.mainpage, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12261 is a malicious package: tinkoff-statist-browser-typed-client-investaccounting.events.templatepage.mainpage (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-2026-12261/ (Markdown: https://insights.sbomify.com/MAL-2026-12261/index.md)","id":"MAL-2026-12261","markdown":"https://insights.sbomify.com/MAL-2026-12261/index.md","name":"MAL-2026-12261","record":{"aliases":["GHSA-48jc-v3r3-h4fr"],"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 _bridge.js which assembles Cloudflare Workers hostnames by joining split string fragments (e.g. ['oob-worker.c','f103','-070.w','orkers.d','ev'].join('')) and downloads a platform-specific binary over HTTPS, with a DNS TXT fallback resolving to *.dl.well1.site (e.g. ['tin.dl.well1.','si','te'].join('')). The binary is written to /var/tmp/.cache_\u003crand\u003e on Linux or %TEMP%/dotnet_diag_\u003crand\u003e.exe on Windows, chmod 0755, and spawned detached via /bin/sh -c or cmd.exe /c start at _bridge.js:120-126. Cover-story comments and env-var opt-outs (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) frame the drop-and-exec as telemetry; a lib/telemetry.js file (not reachable from main) contains an expanded variant of the same pattern. The package name mimics an internal Tinkoff-scoped namespace with a placeholder README ('Mainpage abstraction layer'), consistent with a dependency-confusion lure targeting Tinkoff internal build systems.\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-investaccounting.events.templatepage.mainpage (npm)","id":"MAL-2026-12261","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-investaccounting.events.templatepage.mainpage","purl":"pkg:npm/tinkoff-statist-browser-typed-client-investaccounting.events.templatepage.mainpage","source":"MAL-2026-12261"}],"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-2026-12261/"}