{"cve":"CVE-2022-23517","nvd":{"published":"2022-12-14T17:15:10.130","modified":"2026-06-17T04:30:16.950","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-1333"],"references":["https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979","https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w","https://hackerone.com/reports/1684163","https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html","https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979"],"products":["debian:debian_linux","rubyonrails:rails_html_sanitizers"],"source":"nvd","synced_at":"2026-10-19T21:37:28.463369388+00:00"},"epss":{"cve":"CVE-2022-23517","score":0.01578,"percentile":0.75484,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5x79-w82f-gw8w","url":"https://osv.dev/vulnerability/GHSA-5x79-w82f-gw8w","summary":"Inefficient Regular Expression Complexity in rails-html-sanitizer","modified":"2025-11-04T17:02:40.602631Z","packages":[{"ecosystem":"RubyGems","name":"rails-html-sanitizer","purl":"pkg:gem/rails-html-sanitizer","ranges":["<1.4.4"],"fixed":["1.4.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}