CVE-2026-85063Medium· 6.5▾ Sunlitnode-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 prope…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
— → 6.5
0.3% → 0.6%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
csv-parse < 7.0.2Patched in:
csv-parse 7.0.2Source: https://github.com/advisories/GHSA-8cw4-87c7-c6xx
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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