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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXB4M3Itam05Zy1jOHc4

rails-html-sanitizer Cross-site Scripting vulnerability

There is a possible XSS vulnerability in all rails-html-sanitizer gem versions below 1.0.4 for Ruby. The gem allows non-whitelisted attributes to be present in sanitized output when input with specially-crafted HTML fragments, and these attributes can lead to an XSS attack on target applications. This issue is similar to CVE-2018-8048 in Loofah. All users running an affected release should either upgrade or use one of the workarounds immediately.

Permalink: https://github.com/advisories/GHSA-px3r-jm9g-c8w8
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXB4M3Itam05Zy1jOHc4
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 6 years ago
Updated: about 1 year ago

CVSS Score: 6.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-px3r-jm9g-c8w8, CVE-2018-3741
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-3741
• https://github.com/rails/rails-html-sanitizer/commit/f3ba1a839a35f2ba7f941c15e239a1cb379d56ae
• https://github.com/advisories/GHSA-px3r-jm9g-c8w8

Repository: https://github.com/rails/rails-html-sanitizer
Blast Radius: 34.9

Affected Packages