What’s Vulnerable › Vulnerabilities

CVE-2017-16114: Regular Expression Denial of Service in marked

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-06-07 · updated 2026-06-17
• Weakness: CWE-400

Description

The marked module is vulnerable to a regular expression denial of service. Based on the information published in the public issue, 1k characters can block for around 6 seconds.

Affected products

• markedjs marked: before 0.3.9 — fixed in 0.3.9
• Npm Marked: before 0.3.9 — fixed in 0.3.9

How to fix

Upgrade to a fixed version: markedjs marked 0.3.9; Npm Marked 0.3.9. Check the vendor advisory for mitigations.

References

• https://github.com/chjj/marked/issues/937
• https://nodesecurity.io/advisories/531
• https://github.com/chjj/marked/issues/937
• https://nodesecurity.io/advisories/531

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