GHSA-vfvf-mqq8-rwqc
Sanitization bypass using HTML Entities in marked
Quick fix
GHSA-vfvf-mqq8-rwqc — marked: upgrade to the fixed version with the command below.
npm install marked@0.3.6Details
Affected versions of `marked` are susceptible to a cross-site scripting vulnerability in link components when `sanitize:true` is configured.
## Proof of Concept
This flaw exists because link URIs containing HTML entities get processed in an abnormal manner. Any HTML Entities get parsed on a best-effort basis and included in the resulting link, while if that parsing fails that character is omitted.
For example:
A link URI such as ``` javascript֍ocument;alert(1) ``` Renders a valid link that when clicked will execute `alert(1)`.
## Recommendation
Update to version 0.3.6 or later.
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