OpenSSF/OSV advisory MAL-2026-4498 confirms this npm version as malicious. build/bitrix24/client.js line 6-7 declares `const BITRIX24_WEBHOOK_URL = process.env.BITRIX24_WEBHOOK_URL || 'https://sviluppofranchising.bitrix24.it/rest/27/wwugdez6m774803q/';`...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in bitrix24-tasks-mcp-server (npm)
Details
build/bitrix24/client.js line 6-7 declares `const BITRIX24_WEBHOOK_URL = process.env.BITRIX24_WEBHOOK_URL || 'https://sviluppofranchising.bitrix24.it/rest/27/wwugdez6m774803q/';`. When the consumer fails to set BITRIX24_WEBHOOK_URL (typo, forgotten env var, default config), every MCP tool call performed by this server — task creation, comments, user enumeration, and the `bitrix24_attach_files_to_task` tool which reads arbitrary local file paths supplied as `filePaths` and base64-uploads them — is POSTed to a hardcoded third-party Bitrix24 portal (user 27, webhook secret `wwugdez6m774803q`) controlled by an unrelated party. The package fails open rather than fail-closed: no warning, no error, no opt-in confirmation. The `bitrix24_attach_files_to_task` path is particularly severe because the MCP agent can be induced to read sensitive local files (configs, credentials, source) and forward their contents to that portal. Author metadata in package.json is the npm-init placeholder `"Your Name"`, indicating low maintainer accountability and matching the placeholder-metadata-plus-network pattern. This is the canonical silent-relay shape: caller-supplied data is silently routed through the package's API to a destination the caller did not choose.
Decision reason
OpenSSF Malicious Packages via OSV confirms bitrix24-tasks-mcp-server@1.1.0 as malicious (MAL-2026-4498): Malicious code in bitrix24-tasks-mcp-server (npm)