What is CVE-2018-7651?

CVE-2018-7651 is a medium-severity vulnerability in Ssri Project, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2018-03-04.

How severe is CVE-2018-7651?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2018-7651 known to be exploited?

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

Resource exhaustion in Ssri Project

CVE-2018-7651

index.js in the ssri module before 5.2.2 for Node.js is prone to a regular expression denial of service vulnerability in strict mode functionality via a long base64 hash string.

Vulnerability class: DoS (Denial of Service)

Published 2018-03-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Ssri Project

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

Public proof-of-concept exploits

References

github.com/zkat/ssri/commit/d0ebcdc22cb5c8f47f89716d08b3518b2485d65d (Patch, Third Party Advisory)
github.com/zkat/ssri/issues/10 (Third Party Advisory)
nodesecurity.io/advisories/565 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-7651?: CVE-2018-7651 is a medium-severity vulnerability in Ssri Project, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2018-03-04.
How severe is CVE-2018-7651?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2018-7651 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.