CVE-2017-16119: Fresh is a module used by the Express.js framework for HTTP response freshness testing

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HIGH 7.5REMOTEUPGRADE

CVE-2017-16119 is a high-severity flaw (CVSS 7.5) affecting fresh. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Fresh is a module used by the Express.js framework for HTTP response freshness testing. It is vulnerable to a regular expression denial of service when it is passed specially crafted input to parse. This causes the event loop to be blocked causing a denial of service condition.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Weakness	CWE-400
Published	2018-06-07
Last modified	2026-10-08

Publisher (CNA): HackerOne · Vendor: fresh project

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-06-07 02:29 UTCPublished CVE record published
2026-10-08 20:17 UTCUpdated Record last modified

fresh project fresh UPGRADE

Affected: < 0.5.2

Fixed in: 0.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls fresh

2. UPGRADE to 0.5.2

npm install fresh@">=0.5.2"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-16119?

fresh: upgrade to 0.5.2. Exact commands for each OS are on this page.

Is CVE-2017-16119 being exploited?

CVE-2017-16119 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-16119 affect?

CVE-2017-16119 affects fresh. Severity is high (CVSS 7.5). Fresh is a module used by the Express.js framework for HTTP response freshness testing. It is vulnerable to a regular expression denial of service when it is passed specially crafted input to parse. This causes the event loop to be blocked

How urgent is CVE-2017-16119?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

Software pages

Express.js vulnerabilities

Related CVEs

CVE-2013-1779 LOW 2.1 UPGRADE Cross-site scripting (XSS) vulnerability in the 3 slide gallery in the Fresh theme before 7.x-1.4 for Drupal a

References

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