@wizloft/harness-validation

{"modified":"2026-08-19T08:33:31Z","published":"2026-08-19T08:33:31Z","schema_version":"1.7.4","id":"MAL-2026-14289","summary":"Malicious code in @wizloft/harness-validation (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (67b0fc0f25eb3d7852b52d7e7db50071ac08ddfb1965df306bbf87ebf295cbe1)\ndist/index.js appends a heavily obfuscated obfuscator.io-style payload (string array _0x240a of length 303, decoder _0x4963, string-array rotation) after the clean TypeScript-compiled validation code. None of this obfuscated code is declared in dist/index.d.ts and it executes at top level on `import '@wizloft/harness-validation'`. Decoded string fragments include Ethereum RPC / block-explorer hostnames (`h.drpc.org`, `pc.io/eth`, `stapi.io`), a hardcoded attacker Ethereum address (`0xa322E5f3...`), Etherscan-style query parameters (`?module=account`, `filterby=from`), a spoofed browser User-Agent, and `application/json` / `content-encoding` request framing. The payload queries the block explorer for transactions from the hardcoded wallet, extracts a URL/payload from the transaction data, then fetches and executes the resolved content — a blockchain-based dead-drop that lets the publisher rotate the delivered code by posting a new transaction from that wallet, giving them a persistent mutable remote-code channel against every process that imports the library. Sibling packages in the @wizloft/* namespace (@wizloft/harness-evidence, @wizloft/harness-kernel) are declared dependencies at matching alpha versions and exhibit the same trojanized-library shape.\n","affected":[{"package":{"ecosystem":"npm","name":"@wizloft/harness-validation"},"versions":["0.1.1-alpha.3"],"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":"dist/index.js","sha256":"affc08739ab30ac2c3d610cbee1e116fce4bc45c6fb88a5c4e62ecf42e107edc","tlsh":"fe23b7c47bd0644003476abb6b0bf0e1f97a18ae75884986f21cfa90ef5632bd5f1635"}],"package_integrity":[{"filename":"harness-validation-0.1.1-alpha.3.tgz","hashes":{"sha1":"540d7396e8a00dce871668bb46ce790480f4a2cc","sha512_sri":"sha512-L4En6T5cJ6xNU7vQgabDEJBYhy8JbxW/x0/Bpe4zZDFyMWHqjWbSrDsdpJCIHDZbPEmE2yJNnmXeK/LSj4LR+A=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@wizloft/harness-validation/v/0.1.1-alpha.3"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-018410","import_time":"2026-08-19T08:48:53.767355574Z","modified_time":"2026-08-19T08:33:31Z","sha256":"67b0fc0f25eb3d7852b52d7e7db50071ac08ddfb1965df306bbf87ebf295cbe1","source":"amazon-inspector","versions":["0.1.1-alpha.3"]}]}}