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Loofah Allows Cross-site Scripting

Moderate severity GitHub Reviewed Published Nov 5, 2019 to the GitHub Advisory Database • Updated Aug 25, 2023

Package

bundler loofah (RubyGems)

Affected versions

< 2.3.1

Patched versions

2.3.1

Description

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

References

Published by the National Vulnerability Database Oct 22, 2019
Reviewed Oct 24, 2019
Published to the GitHub Advisory Database Nov 5, 2019
Last updated Aug 25, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.272%
(68th percentile)

Weaknesses

CVE ID

CVE-2019-15587

GHSA ID

GHSA-c3gv-9cxf-6f57

Source code

Credits

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