CVE-2016-10531: XSS
First published: Thu May 31 2018(Updated: )
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.
Credit: support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| npm/marked | <0.3.6 | 0.3.6 |
| Marked Project | <=0.3.5 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2016-10531
- https://github.com/chjj/marked/pull/592
- https://github.com/chjj/marked/pull/592/commits/2cff85979be8e7a026a9aca35542c470cf5da523
- https://github.com/advisories/GHSA-vfvf-mqq8-rwqc (Advisory)
- https://www.npmjs.com/advisories/101
- https://nodesecurity.io/advisories/101
Frequently Asked Questions
What is the severity of CVE-2016-10531?
CVE-2016-10531 is classified as a high severity cross-site scripting vulnerability.
How do I fix CVE-2016-10531?
To fix CVE-2016-10531, upgrade the 'marked' package to version 0.3.7 or later.
What versions of marked are affected by CVE-2016-10531?
CVE-2016-10531 affects marked versions up to and including 0.3.6.
What happens if I do not address CVE-2016-10531?
If left unaddressed, CVE-2016-10531 could allow attackers to execute arbitrary JavaScript in the context of a victim's browser.
Does CVE-2016-10531 impact all environments using marked?
CVE-2016-10531 primarily impacts environments configuring marked with 'sanitize:true'.
- collector/github-advisory-latest
- alias/GHSA-vfvf-mqq8-rwqc
- alias/CVE-2016-10531
- collector/github-advisory
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- version/marked project/0.3.5