CVE-2020-26256
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.
Does this matter?
Lower severity and a low EPSS score (1.54%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.54% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- c2fo/fast-csv
- Source
- security-advisories@github.com
References
- https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829ePatch, Third 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/Exploit, Third Party Advisory
- https://www.npmjs.com/package/%40fast-csv/parse
- https://www.npmjs.com/package/fast-csvProduct, Third Party Advisory
- https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829ePatch, Third 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/Exploit, Third Party Advisory
- https://www.npmjs.com/package/%40fast-csv/parse
- https://www.npmjs.com/package/fast-csvProduct, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.