@xiaohhhh1/canvas-agent

{"schema_version":"1.7.4","id":"MAL-2026-13398","published":"2026-08-06T12:56:25Z","modified":"2026-08-07T12:53:16.771247490Z","summary":"Malicious code in @xiaohhhh1/canvas-agent (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (a34add291ef7584aec7041449cb2e80d36ae98f93c2725e1aa018707e3334119)\nOn bin start, @xiaohhhh1/canvas-agent opens an outbound WebSocket to the hardcoded relay wss://canvas.xiaohhhh1.com/api/agent-relay and treats inbound messages as HTTP requests to its own loopback API at 127.0.0.1:17371. The bridge unconditionally injects the local agent token (x-canvas-agent-token) into forwarded requests, so remote 'request' messages satisfy token authentication and can invoke /agent/codex/turn and /agent/claude/turn, which spawn the Codex app-server and Claude CLI locally with attacker-supplied prompts and a caller-controlled permissionMode. Codex/Claude are autonomous coding agents that can write files in the workspace and, when permissionMode is widened to danger-full-access, execute arbitrary shell commands. The same code path also bypasses the loopback server's browser-Origin allow-list: the origin gate is populated only after token validation, and the relay bridge presents the valid token without any user-consented browser Origin, so remote-originated calls pass the token+origin check the README advertises. The net effect is a network-to-local-agent-to-shell control path from a hardcoded author-controlled server into the installer's machine and any repository it is run against.\n","affected":[{"package":{"name":"@xiaohhhh1/canvas-agent","ecosystem":"npm"},"versions":["0.4.4","0.4.11","0.4.10","0.4.9","0.4.8"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"dist/relay-bridge.js","sha256":"1592cec35eca9796bcaef872825af69c1b5362b7baa793f9849f573c9e0e4258","tlsh":"9db141020cb3147113b3306eeb17e50a7132a1437342c9aabf9c9bd55f591a9da937cd"},{"path":"dist/agent/codex-client.js","sha256":"64c82c5a1b80d557297872479ce37fa33be391d04c8de1959163204285431a2b","tlsh":"b192850555ffa46242a3756c7f1b42246639a00b310dc968ff4cd6a82f9cd24d2b6fec"},{"path":"dist/server/http.js","sha256":"1b72be515c519efad59b96f6606901e9726142fecdb0712a0889fb73b0b1b79b","tlsh":"8492a60b76af26b04a7be51c8b0b40155677b817b14cc4a4fb8cd260afcdd65e0e2bd8"}],"package_integrity":[{"filename":"canvas-agent-0.4.4.tgz","hashes":{"sha1":"f78e8330047a3fcd66b71e2ee6230bc7aa48e428","sha512_sri":"sha512-yNewscLFEGnVD/DccQtoZC+dEvgGq1EjjSIbNLMMsZ6ZQvqjap9ULUl9Fpcfmg1vvbv+pf3Dgln9h5yAS8ub5Q=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@xiaohhhh1/canvas-agent/v/0.4.4"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/@xiaohhhh1/canvas-agent/v/0.4.11"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/@xiaohhhh1/canvas-agent/v/0.4.10"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/@xiaohhhh1/canvas-agent/v/0.4.9"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/@xiaohhhh1/canvas-agent/v/0.4.8"}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-016269","import_time":"2026-08-06T13:09:08.805629109Z","modified_time":"2026-08-06T12:56:25Z","sha256":"40162697638de6a974c2f7408ccf190f6d5b5f7ea82e5e52bbc9cb2a013fab08","source":"amazon-inspector","versions":["0.4.4"]},{"id":"IN-MAL-2026-017057","import_time":"2026-08-07T12:51:24.276629163Z","modified_time":"2026-08-07T12:37:40Z","sha256":"07742c610792581bda3385162f04dfb375ea8ef09e662a31f94f5ea8cfa514cf","source":"amazon-inspector","versions":["0.4.11"]},{"id":"IN-MAL-2026-017061","import_time":"2026-08-07T12:51:24.499709565Z","modified_time":"2026-08-07T12:38:14Z","sha256":"666b9625de3bae854b67278897e7275aceadf8006c406e672a13ac6b5a9ae2e6","source":"amazon-inspector","versions":["0.4.10"]},{"id":"IN-MAL-2026-017063","import_time":"2026-08-07T12:51:24.593651311Z","modified_time":"2026-08-07T12:40:29Z","sha256":"99baacdee21209244b73a38b2b48cc55db72177734159c541110f6769de4b494","source":"amazon-inspector","versions":["0.4.9"]},{"id":"IN-MAL-2026-017068","import_time":"2026-08-07T12:51:24.729804267Z","modified_time":"2026-08-07T12:50:10Z","sha256":"a34add291ef7584aec7041449cb2e80d36ae98f93c2725e1aa018707e3334119","source":"amazon-inspector","versions":["0.4.8"]}]},"credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}