Home/CVE/In the Loofah gem for Ruby through v2.3.0 unsanitized JavaScript may occur in sanitized output when a crafted SVG elemen
CVE

CVE-2019-15587

In the Loofah gem for Ruby through v2.3.0 unsanitized JavaScript may occur in sanitized output when a crafted SVG elemen

In the Loofah gem for Ruby through v2.3.0 unsanitized JavaScript may occur in sanitized output when a crafted SVG element is republished.

MEDIUM · CVSS 5.4 EPSS 0.02332
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

4
loofah project loofah<= 2.3.0
fedoraproject fedoraall versions
canonical ubuntu linuxall versions
debian linuxall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems loofah MODERATE fixed in 2.3.1
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Oct 2019 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
⚑

Vendor Advisories

9
suse-csafopenSUSE-SU-2026:10353-1
suse-csafopenSUSE-SU-2025:15120-1
suse-csafopenSUSE-SU-2024:14171-1
suse-csafopenSUSE-SU-2024:11337-1
suse-csafopenSUSE-SU-2024:11900-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/flavorjones/loofah/issues/171Third Party Advisory
https://hackerone.com/reports/709009Permissions RequiredThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5/
https://security.netapp.com/advisory/ntap-20191122-0003/Third Party Advisory
https://usn.ubuntu.com/4498-1/Third Party Advisory
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