What’s Vulnerable › Vulnerabilities

CVE-2017-16118

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-07 · updated 2026-06-17
• Weakness: CWE-400

Description

The forwarded module is used by the Express.js framework to handle the X-Forwarded-For header. It is vulnerable to a regular expression denial of service when it's passed specially crafted input to parse. This causes the event loop to be blocked causing a denial of service condition.

Affected products

• HackerOne forwarded node module: before 0.1.2 — fixed in 0.1.2

How to fix

Upgrade to a fixed version: HackerOne forwarded node module 0.1.2. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/104427
• https://nodesecurity.io/advisories/527
• http://www.securityfocus.com/bid/104427
• https://nodesecurity.io/advisories/527

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