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CVE-2013-1855

15
FAUCET Score

CVE-2013-1855 describes a cross-site scripting (XSS) vulnerability in the sanitize_css method within the Action Pack component of Ruby on Rails versions prior to 2.3.18, 3.0.x/3.1.x before 3.1.12, and 3.2.x before 3.2.13, including Red Hat Enterprise Linux distributions. The flaw stems from improper handling of newline characters in CSS token sequences, allowing remote attackers to inject malicious code. With a CVSS score of 4.3, this vulnerability has a medium attack complexity and requires no authentication, potentially leading to information disclosure or integrity compromise. While there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB) is unavailable, and community discussion is minimal, with only one Reddit mention.

Impacted Technologies

VendorProductVersion(s)CPE
3.2.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.2.0:*:*:*:*:*:*:*
3.2.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.2.0:rc1:*:*:*:*:*:*
3.2.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.2.0:rc2:*:*:*:*:*:*
3.2.1CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.2.1:*:*:*:*:*:*:*
3.2.2CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.64%
Probability of exploitation in next 30 days
EPSS Percentile
84.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0264 is in the 75th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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 (18)

redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-railties-1:3.2.17-1.el6sam
View patch
redhatpatch availablevia redhat_api
Product: RHEL 6 Version of OpenShift EnterpriseFixed in: ruby193-rubygem-actionpack-1:3.2.8-5.el6
View patch
redhatpatch availablevia redhat_api
Product: RHEL 6 Version of OpenShift EnterpriseFixed in: rubygem-actionpack-1:3.0.13-8.el6op
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: katello-0:1.4.3.28-1.el6sam_splice
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-actionmailer-1:3.2.17-1.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-actionpack-1:3.2.17-6.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-activemodel-1:3.2.17-1.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-activerecord-1:3.2.17-5.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-activeresource-1:3.2.17-1.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-activesupport-1:3.2.17-2.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-i18n-0:0.6.9-1.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-mail-0:2.5.4-1.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-rack-1:1.4.5-3.el6sam
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.4Fixed in: ruby193-rubygem-rails-1:3.2.17-1.el6sam
View patch
rubygemspatch availablevia ghsa
Product: actionpackFixed in: 2.3.18
rubygemspatch availablevia ghsa
Product: actionpackFixed in: 3.1.12
rubygemspatch availablevia ghsa
Product: actionpackFixed in: 3.2.13
redhatno patchvia redhat_api
Product: Red Hat Satellite 6Fixed in: ruby193-rubygem-actionpack

Vendor Advisories (2)

rubygemsGHSA-q759-hwvc-m3jgmedium

actionpack Cross-site Scripting vulnerability

Oct 24, 2017
redhatCVE-2013-1855Moderate

rubygem-actionpack: css_sanitization: XSS vulnerability in sanitize_css

Mar 18, 2013

References

lists.apple.com / archives/security-announce/2013/Jun/msg00000.html
lists.apple.com / archives/security-announce/2013/Oct/msg00006.html
lists.opensuse.org / opensuse-updates/2013-04/msg00072.html
lists.opensuse.org / opensuse-updates/2013-04/msg00073.html
lists.opensuse.org / opensuse-updates/2014-01/msg00013.html
rhn.redhat.com / errata/RHSA-2013-0698.html
rhn.redhat.com / errata/RHSA-2014-1863.html
groups.google.com / group/rubyonrails-security/msg/8ed835a97cdd1afd
support.apple.com / kb/HT5784
weblog.rubyonrails.org / 2013/3/18/SEC-ANN-Rails-3-2-13-3-1-12-and-2-3-18-have-been-released