CVE-2026-85063

The record

node-csv is a full-featured CSV parser with a simple API that is tested against large datasets. Prior to 7.0.2, csv-parse with the columns and group_columns_by_name options enabled treats a duplicate __proto__ header as an existing property in packages/csv-parse/lib/api/index.js, assigns an attacker-controlled array through obj['__proto__'], and replaces the parsed record object's prototype. A malicious CSV header can therefore inject inherited array values into the returned record, hide those inherited values from JSON serialization, and affect property enumeration and type or shape checks in applications that process the record. This issue is fixed in version 7.0.2.

Affected packages

Related vulnerabilities

• CVE-2026-104852 GraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas. CWE-1321
• CVE-2026-104849 Tinypool is a minimal Node.js worker thread pool implementation. CWE-1321
• CVE-2026-104848 Tinypool is a minimal Node.js worker thread pool implementation. CWE-1321
• CVE-2026-104183 stream-json is a micro-library of stream components for processing JSON and JSONC with a… CWE-1321
• CVE-2026-102992 piscina is a node.js worker pool implementation. CWE-1321
• CVE-2026-101908 Axios is a promise-based HTTP client for the browser and Node.js. CWE-1321
• CVE-2026-101909 Axios is a promise-based HTTP client for the browser and Node.js. CWE-1321
• CVE-2026-101902 Axios is a promise-based HTTP client for the browser and Node.js. CWE-1321