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CVE-2018-16468

21
FAUCET Score

CVE-2018-16468 describes a cross-site scripting (XSS) vulnerability in the Loofah gem for Ruby, affecting versions up to 2.2.2, where unsanitized JavaScript can be re-introduced into sanitized output via crafted SVG elements. This medium-severity vulnerability (CVSS 5.4) requires user interaction and network access, potentially leading to limited confidentiality and integrity impacts. While the vulnerability is present in Debian-based systems using Loofah, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.2.2CPE matchmatch criteria
cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 91st percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

rubygemspatch availablevia ghsa
Product: loofahFixed in: 2.2.3
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: tfm-ror51-rubygem-loofah
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ror42-rubygem-loofah
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ror50-rubygem-loofah

Vendor Advisories (2)

rubygemsGHSA-g4xq-jx4w-4cjvmedium

Loofah Cross-site Scripting vulnerability

Nov 1, 2018
redhatCVE-2018-16468Moderate

rubygem-loofah: XXS when a crafted SVG element is republished

Oct 27, 2018

References

github.com / flavorjones/loofah/issues/154
Third Party Advisory
debian.org / security/2019/dsa-4364
Third Party Advisory