How severe is CVE-2016-10531?

CVE-2016-10531 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-10531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-10531?

CVE-2016-10531 affects Marked Project Marked. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-10531?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-10531 published?

CVE-2016-10531 was published on 2018-05-31 and last updated on 2026-06-17.

CVE-2016-10531

CVE-2016-10531 is a medium-severity vulnerability in Marked Project Marked with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Marked Project Marked
Published: 2018-05-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2016-10531?: 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.
How severe is CVE-2016-10531?: CVE-2016-10531 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-10531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-10531?: CVE-2016-10531 affects Marked Project Marked. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-10531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-10531 published?: CVE-2016-10531 was published on 2018-05-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:marked_project:marked:*:*:*:*:*:node.js:*:*

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