{"id":"CVE-2018-5478","aliases":["EUVD-2023-2550","GHSA-mpg7-2rx9-h5qp"],"status":"published","title":"Contao Cross-site Scripting vulnerabililty","description":"Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00415,"percentile":0.36027,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2023-09-21T00:00:00Z","modified":"2026-06-17T02:00:23Z","fixes":[{"ecosystem":"Packagist","package":"contao/core","fixed_in":["3.5.32"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"contao/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.5.32"}]}]},{"source":"osv","ecosystem":"Packagist","package":"contao/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.5.32"}]}],"versions":["3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.RC1","3.1.beta1","3.2.0","3.2.1","3.2.10","3.2.11","3.2.12","3.2.13","3.2.14","3.2.15","3.2.16","3.2.17","3.2.18","3.2.19","3.2.2","3.2.20","3.2.21","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.2.RC1","3.2.beta1","3.2.beta2","3.3.0","3.3.0-RC1","3.3.0-RC2","3.3.0-beta1","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.3.7","3.4.0","3.4.0-RC1","3.4.0-beta1","3.4.1","3.4.2","3.4.3","3.4.4","3.4.5","3.5.0","3.5.0-RC1","3.5.0-beta1","3.5.1","3.5.10","3.5.11","3.5.12","3.5.13","3.5.14","3.5.15","3.5.16","3.5.17","3.5.18","3.5.19","3.5.2","3.5.20","3.5.21","3.5.22","3.5.23","3.5.24","3.5.25","3.5.26","3.5.27","3.5.28","3.5.29","3.5.3","3.5.30","3.5.31","3.5.4","3.5.5","3.5.6","3.5.7","3.5.8","3.5.9"]}],"products":[{"vendor":"contao","product":"contao"}],"references":[{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core/CVE-2018-5478.yaml","tags":["x_transferred","Third Party Advisory","web"]},{"url":"https://security.snyk.io/vuln/SNYK-PHP-CONTAOCORE-70397","tags":["x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-5478","tags":["advisory"]},{"url":"https://github.com/contao/core/commit/3123d6527ae6c46087b0ad8061eb8651cb645b8d","tags":["web"]},{"url":"https://contao.org/en/news/contao-3_5_32.html","tags":["web"]},{"url":"https://github.com/advisories/GHSA-mpg7-2rx9-h5qp"},{"url":"https://github.com/contao/core","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2018-5478","description":"Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.","status":"published","published":"2023-09-21T00:00:00Z","modified":"2024-09-24T18:43:21.305Z","updated_at":"2026-11-02T14:35:00.948726Z"}],"euvd":[{"id":"EUVD-2023-2550","description":"Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.","status":"published","published":"2023-09-21T00:00:00Z","modified":"2024-09-24T18:43:21Z","updated_at":"2026-11-03T00:28:14.929509Z"}],"ghsa":[{"id":"GHSA-mpg7-2rx9-h5qp","title":"Contao Cross-site Scripting vulnerabililty","description":"Contao 3.x before 3.5.32 allows Cross-site Scripting (XSS) via the unsubscribe module in the frontend newsletter extension.","status":"published","published":"2023-09-21T06:30:25Z","modified":"2024-05-15T18:12:54Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:49.48194Z"}],"nvd":[{"id":"CVE-2018-5478","description":"Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.","status":"published","published":"2023-09-21T06:15:12.223Z","modified":"2026-06-17T02:00:23.257Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:05:00.914771Z"}],"osv":[{"id":"GHSA-mpg7-2rx9-h5qp","title":"Contao Cross-site Scripting vulnerabililty","description":"Contao 3.x before 3.5.32 allows Cross-site Scripting (XSS) via the unsubscribe module in the frontend newsletter extension.","status":"published","published":"2023-09-21T06:30:25Z","modified":"2024-05-19T02:24:41.920485Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:52.170928Z"}]}}