Skip to content
Fencer Vulns
medium 6.1

CVE-2018-8048 json

Cross-site Scripting in loofah

published 2018-03-21 8 y ago modified 2026-06-17 4 mo ago also GHSA-x7rv-cr6v-4vm4 , EUVD-2018-0188

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

In the Loofah gem through 2.2.0 for Ruby, non-whitelisted HTML attributes may occur in sanitized output by republishing a crafted HTML fragment.

Patch / fix

  • rubygems loofah 2.2.1
  • rubygems nokogiri 1.8.3
  • loofah_project loofah 2.2.1
  • ruby-loofah Debian 14, Debian 13, Debian 12 2.2.1-1

debian advisories DEBIAN-CVE-2018-8048

  • wmi cloudforms managementengine 5.10 1.3.14-7.el7cf
  • cfme cloudforms managementengine 5.10 5.10.0.33-1.el7cf
  • ruby cloudforms managementengine 5.10 2.4.5-90.el7cf
  • smem cloudforms managementengine 5.10 1.4-1.el7cf
  • nginx cloudforms managementengine 5.10 1:1.10.2-1.el7at
  • erlang cloudforms managementengine 5.10 19.3.6.7-1.el7at
  • prince cloudforms managementengine 5.10 9.0r2-10.el7cf
  • wxGTK3 cloudforms managementengine 5.10 3.0.3-5.el7at

red hat advisories RHSA-2019:0212

  • rubygem-loofah OpenStack Cloud Crowbar 9, OpenStack Cloud Crowbar 8 2.0.2-3.11.1
  • rubygem-loofah OpenStack Cloud Crowbar 9, OpenStack Cloud Crowbar 8, OpenStack Cloud 7 +1 more 2.0.2-3.8.1
  • rubygem-loofah OpenStack Cloud Crowbar 8, OpenStack Cloud 7, Enterprise Storage 4 2.0.2-3.5.1

suse advisories SUSE-SU-2022:4075-1SUSE-SU-2019:2209-1SUSE-SU-2019:0394-1

  • rubygem-loofah openSUSE Tumbleweed 2.23.1-1.5
  • rubygem-nokogiri openSUSE Tumbleweed 1.18.9-1.4
  • rubygem-loofah openSUSE Tumbleweed 2.23.1-1.3
  • rubygem-nokogiri openSUSE Tumbleweed 1.18.2-1.1
  • rubygem-loofah openSUSE Tumbleweed 2.22.0-1.5
  • rubygem-nokogiri openSUSE Tumbleweed 1.15.5-1.5
  • rubygem-loofah openSUSE Tumbleweed 2.14.0-1.1
  • rubygem-nokogiri openSUSE Tumbleweed 1.13.3-1.1

opensuse advisories openSUSE-SU-2026:10353-1openSUSE-SU-2026:10356-1openSUSE-SU-2025:15120-1openSUSE-SU-2025:14697-1openSUSE-SU-2024:14171-1openSUSE-SU-2024:14174-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-8048 updated cvss 6.1

rubygem-loofah: XSS vulnerability due to unescaped comments within attributes by libxml2

  • Red Hat CloudForms Management Engine 5.10 smem 1.4-1.el7cf, wmi 1.3.14-7.el7cf, ruby 2.4.5-90.el7cf, nginx 1.10.2-1.el7at, wxGTK3 3.0.3-5.el7at, prince 9.0r2-10.el7cf, +179 more
    fixed: vendor fix RHSA-2019:0212
  • Red Hat Software Collections rh-ror42-rubygem-loofah, rh-ror50-rubygem-loofah
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.93% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
rubygems loofah
<2.2.1
2.2.1
rubygems nokogiri
<1.8.3
1.8.3

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.