What is CVE-2018-18864?

CVE-2018-18864 is a critical-severity vulnerability in Loadbalancer Enterprise Va Max, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2018-11-20.

How severe is CVE-2018-18864?

Critical severity. CVSS v3 base score is 9.6 out of 10.

XSS in Loadbalancer Enterprise Va Max

CVE-2018-18864

Loadbalancer.org Enterprise VA MAX before 8.3.3 has XSS because Apache HTTP Server logs are displayed.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-11-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (84.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Loadbalancer Enterprise Va Max

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/150135/Loadbalancer.org-Enterprise-VA-MAX-Cross-S… (Exploit, VDB Entry, Third Party Advisory)
seclists.org/fulldisclosure/2018/Nov/5 (mailing-list, Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-18864?: CVE-2018-18864 is a critical-severity vulnerability in Loadbalancer Enterprise Va Max, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2018-11-20.
How severe is CVE-2018-18864?: Critical severity. CVSS v3 base score is 9.6 out of 10.