CVE-2026-85063
Severity not reportednode-csv is a full-featured CSV parser with a simple API that is tested against large datasets.
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 products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/adaltas/node-csv/commit/eb4d1484589c976dcb977db8dd0b90e015a6f66e security-advisories@github.com
- https://github.com/adaltas/node-csv/issues/496 security-advisories@github.com
- https://github.com/adaltas/node-csv/pull/497 security-advisories@github.com
- https://github.com/adaltas/node-csv/security/advisories/GHSA-8cw4-87c7-c6xx security-advisories@github.com
- https://github.com/adaltas/node-csv/issues/496 134c704f-9b21-4f2e-91b3-4a467353bcc0