要点
- CVE-2020-26256 は fast-csv (c2fo), @fast-csv/parse, fast-csv に影響する深刻度「中」 (CVSS 6.5) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：1.5%（全脆弱性の 75.0% より高い）。
- 対処：4.3.6 以降に更新してください。
概要
Impact
Possible ReDoS (Regular Expression Denial of Service) when using ignoreEmpty option when parsing.
Patches
This has been patched in v4.3.6
Workarounds
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
References
This vulnerability was found using a CodeQL query which identified EMPTY_ROW_REGEXP regular expression as vulnerable.
Link to query run.
For more information
If you have any questions or comments about this advisory:
NVD の説明
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.
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