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CVE-2026-85063GHSA-8CW4-87C7-C6XX

node-csv: Prototype replacement still reachable via columns path

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 7.0.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • adaltas node-csv

    fixed in 7.0.2

  • csv-parsenpm

    fixed in 7.0.2

References 4

GitHub · adaltas/node-csv