What is CVE-2018-16468?

CVE-2018-16468 is a medium-severity vulnerability in Loofah Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-10-30.

How severe is CVE-2018-16468?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Loofah Project

CVE-2018-16468

In the Loofah gem for Ruby, through v2.2.2, unsanitized JavaScript may occur in sanitized output when a crafted SVG element is republished.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-10-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.6th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.009 · change: -0.002

Affected products

Loofah Project
Debian Linux — versions 9.0
Loofah (Ruby Gem) — versions v2.2.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.debian.org/security/2019/dsa-4364 (vendor-advisory, Third Party Advisory)
github.com/flavorjones/loofah/issues/154 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-16468?: CVE-2018-16468 is a medium-severity vulnerability in Loofah Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-10-30.
How severe is CVE-2018-16468?: Medium severity. CVSS v3 base score is 5.4 out of 10.