{"id":"GHSA-rh5w-82wh-jhr8","summary":"XSS vulnerability on asset view","details":"### Impact\nMautic versions before 3.3.4 / 4.0.0 are vulnerable to an inline JS XSS attack when viewing Mautic assets by utilizing inline JS in the title and adding a broken image URL as a remote asset. This can only be leveraged by an authenticated user with permission to create or edit assets. \n\n### Patches\nUpgrade to 3.3.4 or 4.0.0\n\n### Workarounds\nNo\n\n### References\nhttps://github.com/mautic/mautic/releases/tag/3.3.4\nhttps://github.com/mautic/mautic/releases/tag/4.0.0\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@mautic.org](mailto:security@mautic.org)\n","aliases":["CVE-2021-27912"],"modified":"2026-07-08T06:30:02.762774127Z","published":"2021-09-01T18:40:31Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2021-08-30T18:05:54Z","nvd_published_at":"2021-08-30T16:15:00Z","cwe_ids":["CWE-79"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/mautic/mautic/security/advisories/GHSA-rh5w-82wh-jhr8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27912"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2021-27912.yaml"},{"type":"PACKAGE","url":"https://github.com/mautic/mautic"}],"affected":[{"package":{"name":"mautic/core","ecosystem":"Packagist","purl":"pkg:composer/mautic/core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.4"}]}],"versions":["1.0.0","1.0.0-beta","1.0.0-beta2","1.0.0-beta3","1.0.0-beta4","1.0.0-rc1","1.0.0-rc2","1.0.0-rc3","1.0.0-rc4","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5","1.1.0","1.1.1","1.1.2","1.1.3","1.2.0","1.2.0-beta1","1.2.1","1.2.2","1.2.3","1.2.4","1.3.0","1.3.1","1.4.0","1.4.1","2.0.0","2.0.1","2.1.0","2.1.1","2.10.0","2.10.0-beta","2.10.1","2.11.0","2.11.0-beta","2.12.0","2.12.0-beta","2.12.1","2.12.1-beta","2.12.2","2.12.2-beta","2.13.0","2.13.0-beta","2.13.1","2.14.0","2.14.0-beta","2.14.1","2.14.1-beta","2.14.2","2.14.2-beta","2.15.0","2.15.0-beta","2.15.1","2.15.1-beta","2.15.2","2.15.2-beta","2.15.3","2.15.3-beta","2.16.0","2.16.0-beta","2.16.1","2.16.1-beta","2.16.2","2.16.2-beta","2.16.3","2.16.3-beta","2.16.4","2.16.5","2.2.0","2.2.1","2.3.0","2.4.0","2.5.0","2.5.1","2.6.0","2.6.1","2.7.0","2.7.1","2.8.0","2.8.1","2.8.2","2.9.0","2.9.0-beta","2.9.1","2.9.2","3.0.0","3.0.0-alpha","3.0.0-beta","3.0.0-beta2","3.0.1","3.0.2","3.0.2-rc","3.1.0","3.1.0-rc","3.1.1","3.1.1-rc","3.1.2","3.1.2-rc","3.2.0","3.2.0-rc","3.2.1","3.2.2","3.2.2-rc","3.2.3","3.2.4","3.2.5","3.2.5-rc","3.3.0","3.3.0-rc","3.3.1","3.3.2","3.3.2-rc","3.3.3","3.3.3-rc"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-rh5w-82wh-jhr8/GHSA-rh5w-82wh-jhr8.json"}},{"package":{"name":"mautic/core","ecosystem":"Packagist","purl":"pkg:composer/mautic/core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha1"},{"fixed":"4.0.0"}]}],"versions":["4.0.0-alpha1","4.0.0-beta","4.0.0-rc"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-rh5w-82wh-jhr8/GHSA-rh5w-82wh-jhr8.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"}]}