CVE-2021-21306 — Denial of Service in Marked

Affected: markedjs marked

Marked is an open-source markdown parser and compiler (npm package "marked"). In marked from version 1.1.1 and before version 2.0.0, there is a Regular expression Denial of Service vulnerability. This vulnerability can affect anyone who runs user generated code through marked. This vulnerability is fixed in version 2.0.0.

GHSA-4r62-v4vq-hr96 — Regular Expression Denial of Service (REDoS) in Marked

Affected: npm: marked

### 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)

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CVE-2021-21306 — Denial of Service in Marked

GHSA-4r62-v4vq-hr96 — Regular Expression Denial of Service (REDoS) in Marked