CVE-2021-21306
Regular Expression Denial of Service (REDoS) in Marked
Impact
### Impact _What kind of vulnerability is it? Who is impacted?_ [Regular expression Denial of Service](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) A Denial of Service attack can affect anyone who runs user generated code through `marked`. ### Patches _Has the problem been patched? What versions should users upgrade to?_ patched in v2.0.0 ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ None. ### References _Are there any links users can visit to find out more?_ https://github.com/markedjs/marked/issues/1927 https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS ### For more information If you have any questions or comments about this advisory: * Open an issue in [marked](https://github.com/markedjs/marked/issues)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | marked | >= 1.1.1, < 2.0.0 | 2.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Marked Project | Marked | from 1.1.1 before 2.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/markedjs/marked/commit/7293251c438e3ee968970f7609f1a27f9007bccd
- https://github.com/markedjs/marked/issues/1927
- https://github.com/markedjs/marked/pull/1864
- https://github.com/markedjs/marked/security/advisories/GHSA-4r62-v4vq-hr96
- https://www.npmjs.com/package/marked
- https://github.com/advisories/GHSA-4r62-v4vq-hr96
- https://nvd.nist.gov/vuln/detail/CVE-2021-21306