---
title: "CVE-2016-10531\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2016-10531?format=md
keywords: index, follow
---

# CVE-2016-10531

Publication date 31 May 2018

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**6.1 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2016-10531?format=md#impact-score)

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## Description

marked is an application that is meant to parse and compile markdown. Due
to the way that marked 0.3.5 and earlier parses input, specifically HTML
entities, it's possible to bypass marked's content injection protection
(`sanitize: true`) to inject a `javascript:` URL. This flaw exists because
`&#xNNanything;` gets parsed to what it could and leaves the rest behind,
resulting in just `anything;` being left.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| node-marked | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.1 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Changed |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.1 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-10531)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-10531)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-10531)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-10531)

### Other references

* <https://github.com/chjj/marked/pull/592>
* <https://github.com/chjj/marked/pull/592/commits/2cff85979be8e7a026a9aca35542c470cf5da523>
* <https://nodesecurity.io/advisories/101>
* <https://www.cve.org/CVERecord?id=CVE-2016-10531>