This PR was automatically created by Snyk using the credentials of a real user.
Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.
#### Changes included in this PR
- Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
- package.json
#### Vulnerabilities that will be fixed
##### With an upgrade:
Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity
:-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------
![critical severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/c.png "critical severity") | **811/1000** **Why?** Proof of Concept exploit, Has a fix available, CVSS 9.8 | Arbitrary Code Execution [SNYK-JS-FRONTMATTER-569103](https://snyk.io/vuln/SNYK-JS-FRONTMATTER-569103) | Yes | Proof of Concept
![medium severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/m.png "medium severity") | **504/1000** **Why?** Has a fix available, CVSS 5.8 | Prototype Pollution [SNYK-JS-HIGHLIGHTJS-1045326](https://snyk.io/vuln/SNYK-JS-HIGHLIGHTJS-1045326) | Yes | No Known Exploit
![medium severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/m.png "medium severity") | **586/1000** **Why?** Proof of Concept exploit, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS) [SNYK-JS-MARKED-2342073](https://snyk.io/vuln/SNYK-JS-MARKED-2342073) | Yes | Proof of Concept
![medium severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/m.png "medium severity") | **586/1000** **Why?** Proof of Concept exploit, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS) [SNYK-JS-MARKED-2342082](https://snyk.io/vuln/SNYK-JS-MARKED-2342082) | Yes | Proof of Concept
(*) Note that the real score may have changed since the PR was raised.
Commit messagesPackage name: front-matter
The new version differs by 43 commits.
See the full diff
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------------
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[//]: # (snyk:metadata:{"prId":"caafb038-83e5-4b88-9ace-019c5664fd5e","prPublicId":"caafb038-83e5-4b88-9ace-019c5664fd5e","dependencies":[{"name":"front-matter","from":"2.3.0","to":"4.0.1"},{"name":"highlight.js","from":"8.9.1","to":"9.18.2"},{"name":"marked","from":"2.1.3","to":"4.0.10"}],"packageManager":"npm","projectPublicId":"dd4e1c71-d6ec-4fc0-9b26-94539a7973af","projectUrl":"https://app.snyk.io/org/joeworkman/project/dd4e1c71-d6ec-4fc0-9b26-94539a7973af?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-JS-MARKED-2342082","SNYK-JS-MARKED-2342073","SNYK-JS-HIGHLIGHTJS-1045326","SNYK-JS-FRONTMATTER-569103"],"upgrade":["SNYK-JS-FRONTMATTER-569103","SNYK-JS-HIGHLIGHTJS-1045326","SNYK-JS-MARKED-2342073","SNYK-JS-MARKED-2342082"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["priorityScore"],"priorityScoreList":[586,586,504,811]})
---
**Learn how to fix vulnerabilities with free interactive lessons:**
🦉 [Regular Expression Denial of Service (ReDoS)](https://learn.snyk.io/lessons/redos/javascript/?loc=fix-pr)
🦉 [Regular Expression Denial of Service (ReDoS)](https://learn.snyk.io/lessons/redos/javascript/?loc=fix-pr)
🦉 [Prototype Pollution](https://learn.snyk.io/lessons/redos/javascript/?loc=fix-pr)
🦉 [More lessons are available in Snyk Learn](https://learn.snyk.io?loc=fix-pr)
This PR was automatically created by Snyk using the credentials of a real user.
Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.
#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - package.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:------------------------- ![critical severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/c.png "critical severity") | **811/1000****Why?** Proof of Concept exploit, Has a fix available, CVSS 9.8 | Arbitrary Code Execution
[SNYK-JS-FRONTMATTER-569103](https://snyk.io/vuln/SNYK-JS-FRONTMATTER-569103) | Yes | Proof of Concept ![medium severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/m.png "medium severity") | **504/1000**
**Why?** Has a fix available, CVSS 5.8 | Prototype Pollution
[SNYK-JS-HIGHLIGHTJS-1045326](https://snyk.io/vuln/SNYK-JS-HIGHLIGHTJS-1045326) | Yes | No Known Exploit ![medium severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/m.png "medium severity") | **586/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-MARKED-2342073](https://snyk.io/vuln/SNYK-JS-MARKED-2342073) | Yes | Proof of Concept ![medium severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/m.png "medium severity") | **586/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-MARKED-2342082](https://snyk.io/vuln/SNYK-JS-MARKED-2342082) | Yes | Proof of Concept (*) Note that the real score may have changed since the PR was raised.
Commit messages
Package name: front-matter
The new version differs by 43 commits.Package name: marked
The new version differs by 173 commits.