Vulnerability Description
Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. In fast-cvs before version 4.3.6 there is a possible ReDoS vulnerability (Regular Expression Denial of Service) when using ignoreEmpty option when parsing. This has been patched in `v4.3.6` You will only be affected by this if you use the `ignoreEmpty` parsing option. If you do use this option it is recommended that you upgrade to the latest version `v4.3.6` This vulnerability was found using a CodeQL query which identified `EMPTY_ROW_REGEXP` regular expression as vulnerable.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| C2Fo | Fast-Csv | < 4.3.6 |
Related Weaknesses (CWE)
References
- https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829ePatchThird Party Advisory
- https://github.com/C2FO/fast-csv/issues/540Third Party Advisory
- https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwpThird Party Advisory
- https://lgtm.com/query/8609731774537641779/ExploitThird Party Advisory
- https://www.npmjs.com/package/%40fast-csv/parse
- https://www.npmjs.com/package/fast-csvProductThird Party Advisory
- https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829ePatchThird Party Advisory
- https://github.com/C2FO/fast-csv/issues/540Third Party Advisory
- https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwpThird Party Advisory
- https://lgtm.com/query/8609731774537641779/ExploitThird Party Advisory
- https://www.npmjs.com/package/%40fast-csv/parse
- https://www.npmjs.com/package/fast-csvProductThird Party Advisory
FAQ
What is CVE-2020-26256?
CVE-2020-26256 is a vulnerability with a CVSS score of 5.7 (MEDIUM). Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. In fast-cvs before version 4.3.6 there is a possible ReDoS vulnerability (Regular Expression Denia...
How severe is CVE-2020-26256?
CVE-2020-26256 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-26256?
Check the references section above for vendor advisories and patch information. Affected products include: C2Fo Fast-Csv.