GHSA-9fhw-r42p-5c7r

Regular expression Denial of Service in @progfay/scrapbox-parser

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-27405

Packages

Ecosystem	Package	Affected	Fixed in
npm	@progfay/scrapbox-parser	< 6.0.3	6.0.3
npm	@progfay/scrapbox-parser	>= 7.0.0, < 7.0.2	7.0.2

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact A [Regular expression Denial of Service](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) flaw was found in the @progfay/scrapbox-parser package before 6.0.3, 7.0.2 for Node.js. The attacker that is able to be parsed a specially crafted text may cause the application to consume an excessive amount of CPU. ### Patches Upgrade to version 6.0.3, 7.0.2 or later. ### Workarounds Avoid to parse text with a lot of `[` chars. ### References * https://github.com/progfay/scrapbox-parser/pull/519 * https://github.com/progfay/scrapbox-parser/pull/539 * https://github.com/progfay/scrapbox-parser/pull/540 * https://cve.mitre.org/cgi-bin/cvename.cgi?name=2021-27405 * https://snyk.io/vuln/SNYK-JS-PROGFAYSCRAPBOXPARSER-1076803 ### For more information If you have any questions or comments about this advisory: * Open an issue in [github.com/progfay/scrapbox-parser](https://github.com/progfay/scrapbox-parser/issues)

References

External links from the advisory. They lead to third-party sites.