What is CVE-2016-4055?

CVE-2016-4055 is a medium-severity vulnerability in Momentjs Moment, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2017-01-23.

How severe is CVE-2016-4055?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2016-4055 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Momentjs Moment

CVE-2016-4055

The duration function in the moment package before 2.11.2 for Node.js allows remote attackers to cause a denial of service (CPU consumption) via a long string, aka a "regular expression Denial of Service (ReDoS)."

Vulnerability class: DoS (Denial of Service)

Published 2017-01-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.099 (95.5th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 96th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.099 · newest: 0.099 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

Public proof-of-concept exploits

References

www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html (Patch, Third Party Advisory)
nodesecurity.io/advisories/55 (Exploit, Broken Link, Vendor Advisory)
www.openwall.com/lists/oss-security/2016/04/20/11 (mailing-list, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/95849 (VDB Entry, Third Party Advisory, vdb-entry)
www.tenable.com/security/tns-2019-02 (Patch, Third Party Advisory)
lists.apache.org/thread.html/54df3aeb4239b64b50b356f0ca6f986e3c4ca5b84c515dce07… (mailing-list)
lists.apache.org/thread.html/10f0f3aefd51444d1198c65f44ffdf2d78ca3359423dbc1c16… (mailing-list)
lists.apache.org/thread.html/17ff53f7999e74fbe3cc0ceb4e1c3b00b180b7c5afec8e9788… (mailing-list)
lists.apache.org/thread.html/52bafac05ad174000ea465fe275fd3cc7bd5c25535a7631c0b… (mailing-list)

Frequently asked questions

What is CVE-2016-4055?: CVE-2016-4055 is a medium-severity vulnerability in Momentjs Moment, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2017-01-23.
How severe is CVE-2016-4055?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2016-4055 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.