Cross-Site Scripting in Ruby's rails-html-sanitizer by Ruby on Rails
CVE-2018-3741

6.1MEDIUM

Key Information:

Vendor

Rails

Status
Rails-html-sanitizer
Vendor
CVE Published:
30 March 2018

What is CVE-2018-3741?

The rails-html-sanitizer gem, used in Ruby applications, is vulnerable to Cross-Site Scripting (XSS) attacks in all versions prior to 1.0.4. This vulnerability occurs due to the inclusion of non-whitelisted attributes in the sanitized output when processing carefully crafted HTML snippets. Attackers can exploit this flaw to inject malicious scripts, potentially compromising the security of web applications that rely heavily on the sanitization provided by this gem. Developers are strongly encouraged to upgrade to version 1.0.4 or later to mitigate this risk, or to implement provided workarounds immediately.

Affected Version(s)

rails-html-sanitizer <= 1.0.3

References

https://github.com/rails/rails-html-sanitizer/commit/f3ba...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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