cobrowsing-k8s-module

{"modified":"2026-08-05T13:59:01Z","published":"2026-08-05T13:59:01Z","schema_version":"1.7.4","id":"MAL-2026-12655","summary":"Malicious code in cobrowsing-k8s-module (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (6cde47afeee95884dc83b3dab22855db86950fd58756900af5100d1286a7c7be)\nOn require of the package's main entry, _bridge.js selects a platform-specific endpoint, reconstructs remote hostnames at runtime via array.join(\"\") string-split obfuscation (oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, and sdk/ext/pkg/net.dl.wel1.ru), fetches an opaque binary over HTTPS, writes it to a hidden temp path with cover-story filenames (dotnet_diag_*.exe,.cache_*,.analytics_state), chmods 0755, and spawns it detached via child_process spawn(\"/bin/sh\") or spawn(\"cmd\"). If HTTP fetch fails, the code falls back to a DNS-TXT covert channel that reads a chunk count from c.<domain> and reassembles base64-encoded binary chunks across numbered TXT records under *.dl.wel1.ru to bypass HTTP egress filters. No hash or signature verification is performed. The behavior is disguised as analytics/telemetry.\n","affected":[{"package":{"ecosystem":"npm","name":"cobrowsing-k8s-module"},"versions":["35.6.2"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"_bridge.js","sha256":"d5b1e7a48294fd0e771c24b3d7ed21809ff00e9723592af23145940609c582aa","tlsh":"5ca1a89a16a670184bb09be4c717541af65be66333c0c298f69ca5d81f7612483b2efc"}],"package_integrity":[{"filename":"cobrowsing-k8s-module-35.6.2.tgz","hashes":{"sha1":"8090ebdd7c600da765411a0f0b766e7592a843af","sha512_sri":"sha512-wutC/1W86qAGTe7tmL1vWc/Gh2BeuGSqLm6To5n91ixtei+Hsai/uB+raJ8mj6uHB3NSI0DqmLK6Ufv8IzkjrQ=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/cobrowsing-k8s-module/v/35.6.2"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015118","import_time":"2026-08-05T14:20:03.931852308Z","modified_time":"2026-08-05T13:59:01Z","sha256":"6cde47afeee95884dc83b3dab22855db86950fd58756900af5100d1286a7c7be","source":"amazon-inspector","versions":["35.6.2"]}]}}