CVE-2022-23517

HIGH

Rubyonrails Rails Html Sanitizers < 1.4.4 - Denial of Service

Title source: rule

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.

References (5)

[Third Party Advisory] https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w

[Patch, Third Party Advisory] https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979

View Patch ZIP pw:eip

[Permissions Required, Third Party Advisory] https://hackerone.com/reports/1684163

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html

[Mailing List] https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html

Scores

CVSS v3 7.5

EPSS 0.0026

EPSS Percentile 48.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-1333

Status published

Products (3)

debian/debian_linux 10.0

rubygems/rails-html-sanitizer 0 - 1.4.4RubyGems

rubyonrails/rails_html_sanitizers < 1.4.4

Published Dec 14, 2022

Tracked Since Feb 18, 2026