PT-2018-16163 · Ruby · Rails-Html-Sanitizer

Rafaelfranca · Published 2018-03-30 · Updated 2026-03-13 · CVE-2018-3741

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions rails-html-sanitizer gem versions prior to 1.0.4

Description The issue allows non-whitelisted attributes to be present in sanitized output when input with specially-crafted HTML fragments, potentially leading to an XSS attack on target applications.

Recommendations For versions prior to 1.0.4, upgrade to version 1.0.4 or later to resolve the issue. As a temporary workaround, consider using one of the provided workarounds until an upgrade is possible.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2018-3741

GHSA-PX3R-JM9G-C8W8

OPENSUSE-SU-2024:11349-1

OPENSUSE-SU-2024:12145-1

OPENSUSE-SU-2024:13137-1

OPENSUSE-SU-2024:14175-1

OPENSUSE-SU-2025:15125-1

OPENSUSE-SU-2026:10361-1

RHSA-2019:0212

SUSE-SU-2019:2182-1

Affected Products

Rails-Html-Sanitizer

References · 29

• https://github.com/rails/rails-html-sanitizer/commit/f3ba1a839a35f2ba7f941c15e239a1cb379d56ae · Patch
• https://security-tracker.debian.org/tracker/CVE-2018-3741 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-3741 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10361-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-3741 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-3741 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:14175-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-3741 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-3741 · Security Note
• https://osv.dev/vulnerability/GHSA-px3r-jm9g-c8w8 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-3741 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:2182-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:13137-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15125-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12145-1 · Vendor Advisory