CVE-2022-23517 HIGH

CVE-2022-23517: Inefficient Regular Expression Complexity in rails-html-sanitizer

Vendor Rails

Product rails-html-sanitizer

Weakness CWE-1333

Published December 14, 2022

Last update November 3, 2025

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

Description

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.

Key dates

Disclosure timeline

December 14, 2022 CVE published

November 3, 2025 Record updated