What is CVE-2018-5954?

CVE-2018-5954 is a high-severity vulnerability in Phpfreechat, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-01-25.

How severe is CVE-2018-5954?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Phpfreechat

CVE-2018-5954

phpFreeChat 1.7 and earlier allows remote attackers to cause a denial of service by sending a large number of connect commands.

Vulnerability class: DoS (Denial of Service)

Published 2018-01-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.089 (95.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.089 · newest: 0.089 · change: 0.000

Affected products

Phpfreechat

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

www.exploit-db.com/exploits/43852/ (Exploit, VDB Entry, Third Party Advisory, exploit)
packetstormsecurity.com/files/146037/PHPFreeChat-1.7-Denial-Of-Service.html (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2018-5954?: CVE-2018-5954 is a high-severity vulnerability in Phpfreechat, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-01-25.
How severe is CVE-2018-5954?: High severity. CVSS v3 base score is 7.5 out of 10.