{"id":"GHSA-qx76-c53f-5c7q","summary":"PHP League CommonMark vulnerable to Cross-Site Scripting (XSS)","details":"Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via a newline character (e.g., writing javascript as javascri%0apt).","aliases":["CVE-2018-20583"],"modified":"2024-02-16T08:16:43.743975Z","published":"2022-05-14T01:40:50Z","database_specific":{"cwe_ids":["CWE-79"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2022-09-12T15:59:43Z","nvd_published_at":"2018-12-30T05:29:00Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20583"},{"type":"WEB","url":"https://github.com/thephpleague/commonmark/issues/337"},{"type":"WEB","url":"https://commonmark.thephpleague.com/changelog"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/league/commonmark/CVE-2018-20583.yaml"},{"type":"PACKAGE","url":"https://github.com/thephpleague/commonmark"},{"type":"WEB","url":"https://github.com/thephpleague/commonmark/releases/tag/0.18.1"}],"affected":[{"package":{"name":"league/commonmark","ecosystem":"Packagist","purl":"pkg:composer/league/commonmark"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.15.6"},{"fixed":"0.18.1"}]}],"versions":["0.15.6","0.15.7","0.16.0","0.17.0","0.17.1","0.17.2","0.17.3","0.17.4","0.17.5","0.18.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-qx76-c53f-5c7q/GHSA-qx76-c53f-5c7q.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}