{"answers":{"affected":"1 open source package ship an affected version, including @coze-common/chat-area.","exploited":"There is no known exploitation of MAL-2026-5533 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-2026-5533 is a malicious package in @coze-common/chat-area, published on 10 Jun 2026."},"fix_prompt":"MAL-2026-5533 is a malicious package: @coze-common/chat-area (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-2026-5533/ (Markdown: https://insights.sbomify.com/MAL-2026-5533/index.md)","id":"MAL-2026-5533","markdown":"https://insights.sbomify.com/MAL-2026-5533/index.md","name":"MAL-2026-5533","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"This package is a dependency-confusion/namespace-squat against ByteDance's @coze-common scope. The library is hollow — index.js is `module.exports = {}` and the description ('Browser accessibility and security utilities for React') does not match the package name. The harm runs at install time: package.json declares `postinstall: node postinstall.js`, and postinstall.js collects os.hostname(), os.userInfo().username, process.cwd(), and a recursive directory listing of the install working directory, base64-encodes the JSON payload, and POSTs it to https://wybqtvzmfhssbvhokfgbvgaalpfg1vneq.oast.fun/ via https.request. A DNS covert channel (dns.lookup of a hex-encoded hostname+username subdomain under the same oast.fun host) is used as fallback to bypass HTTP egress filters. oast.fun is Interactsh out-of-band infrastructure used for reconnaissance against the installer's machine; the version 99.1.1 is the shadowing pattern used to win dependency-confusion resolution against the legitimate private @coze-common scope.","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 @coze-common/chat-area (npm)","id":"MAL-2026-5533","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":"@coze-common/chat-area","purl":"pkg:npm/%40coze-common%2Fchat-area","source":"MAL-2026-5533"}],"products":null,"published":"2026-06-10","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-2026-5533/"}