CVE-2016-10531

Name: CVE-2016-10531
Creator: NVD / NIST
Published: 2018-05-31T20:29:01.033+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.46%

Last modified Jun 17, 2026

CVE-2016-10531 is a vulnerability of currently unknown severity. 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. EPSS estimates a 1.46% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.46%

70.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Marked Project	Marked	<= 0.3.5

References

https://github.com/chjj/marked/pull/592Exploit, Issue Tracking, Third Party Advisory
https://github.com/chjj/marked/pull/592/commits/2cff85979be8e7a026a9aca35542c470cf5da523Patch, Third Party Advisory
https://nodesecurity.io/advisories/101Third Party Advisory
https://github.com/chjj/marked/pull/592Exploit, Issue Tracking, Third Party Advisory
https://github.com/chjj/marked/pull/592/commits/2cff85979be8e7a026a9aca35542c470cf5da523Patch, Third Party Advisory
https://nodesecurity.io/advisories/101Third Party Advisory

Timeline

Published: May 31, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-10531?

How severe is CVE-2016-10531?

Severity scoring for CVE-2016-10531 is pending analysis. The EPSS model estimates a 1.46% probability of exploitation in the next 30 days.

How do I fix CVE-2016-10531?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-10531?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST