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CVE-2019-15587

21
FAUCET Score

CVE-2019-15587 describes a cross-site scripting (XSS) vulnerability in the Loofah Ruby gem, affecting versions up to 2.3.0, as well as canonical, debian, and fedoraproject. This medium-severity vulnerability (CVSS 5.4) allows unsanitized JavaScript to be executed when a specially crafted SVG element is republished, requiring user interaction and low privileges for exploitation. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.0CPE matchmatch criteria
cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 96th 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: 2.3.1
redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5Fixed in: cfme-amazon-smartstate
redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5Fixed in: cfme-gemset
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ror50-rubygem-loofah

Vendor Advisories (2)

rubygemsGHSA-c3gv-9cxf-6f57medium

Loofah Allows Cross-site Scripting

Nov 5, 2019
redhatCVE-2019-15587Moderate

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

Oct 10, 2019

References

github.com / flavorjones/loofah/issues/171
Third Party Advisory
hackerone.com / reports/709009
Permissions RequiredThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5
security.netapp.com / advisory/ntap-20191122-0003
Third Party Advisory
usn.ubuntu.com / 4498-1
Third Party Advisory
debian.org / security/2019/dsa-4554
Third Party Advisory