High

Regular Expression Denial of Service in csv-parse

Disclosed: 15.10.2019
Updated: 11.10.2026 10:22

Versions of csv-parse prior to 4.4.6 are vulnerable to Regular Expression Denial of Service. The __isInt() function contains a malformed regular expression that processes large specially-crafted input very slowly, leading to a Denial of Service. This is triggered when using the cast option.

Recommendation

Upgrade to version 4.4.6 or later.

Affected software

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Platform	Package	Vulnerable versions	Fixed in
npm package	csv-parse	< 4.4.6	4.4.6

References

CVSS score 7.5/10

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-20, CWE-400
Platform: npm
Package: csv-parse
Disclosed: 15.10.2019
Updated: 11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-582f-p4pg-xc74 - CC BY 4.0

Vulnerability history: csv-parse

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries: 2
First → latest: 10.2019 09.2026
Without a fix: 0
Exploited in attacks: 0

Severity breakdown

High 1
Medium 1

Disclosures per year

2019: 1
2020: 0
2021: 0
2022: 0
2023: 0
2024: 0
2025: 0
2026: 1

08.09.2026

node-csv: Prototype replacement still reachable via columns path

Medium CVE-2026-85063 < 7.0.2 7.0.2
15.10.2019

Regular Expression Denial of Service in csv-parse this entry

High · 7.5 CVE-2019-17592 < 4.4.6 4.4.6

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