{"schema_version":"1.7.3","id":"GHSA-486f-hjj9-9vhh","published":"2022-12-13T17:36:28Z","modified":"2025-11-04T17:02:26.327464Z","aliases":["CVE-2022-23514"],"summary":"Inefficient Regular Expression Complexity in Loofah","details":"## Summary\n\nLoofah `< 2.19.1` contains 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.\n\n\n## Mitigation\n\nUpgrade to Loofah `>= 2.19.1`.\n\n\n## Severity\n\nThe Loofah maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).\n\n\n## References\n\n- [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html)\n- https://hackerone.com/reports/1684163\n\n\n## Credit\n\nThis vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).","affected":[{"package":{"name":"loofah","ecosystem":"RubyGems","purl":"pkg:gem/loofah"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.1"}]}],"versions":["0.2.0","0.2.1","0.2.2","0.3.0","0.3.1","0.4.0","0.4.1","0.4.2","0.4.3","0.4.4","0.4.5","0.4.6","0.4.7","1.0.0","1.0.0.beta.1","1.1.0","1.2.0","1.2.1","2.0.0","2.0.1","2.0.2","2.0.3","2.1.0","2.1.0.rc1","2.1.0.rc2","2.1.1","2.10.0","2.11.0","2.12.0","2.13.0","2.14.0","2.15.0","2.16.0","2.17.0","2.18.0","2.19.0","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.4.0","2.5.0","2.6.0","2.7.0","2.8.0","2.9.0","2.9.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-486f-hjj9-9vhh/GHSA-486f-hjj9-9vhh.json"}}],"references":[{"type":"WEB","url":"https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23514"},{"type":"WEB","url":"https://github.com/flavorjones/loofah/commit/a6e0a1ab90675a17b1b2be189129d94139e4b143"},{"type":"WEB","url":"https://hackerone.com/reports/1684163"},{"type":"PACKAGE","url":"https://github.com/flavorjones/loofah"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2022-23514.yml"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/09/msg00044.html"}],"database_specific":{"cwe_ids":["CWE-1333"],"github_reviewed":true,"github_reviewed_at":"2022-12-13T17:36:28Z","nvd_published_at":"2022-12-14T14:15:00Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}