{"id":"CVE-2021-27911","aliases":["EUVD-2021-1999","GHSA-72hm-fx78-xwhc"],"status":"published","title":"XSS vulnerability on contacts view","description":"Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.","severity":{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00642,"percentile":0.51308,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-08-30T15:55:12Z","modified":"2026-10-20T10:53:41Z","fixes":[{"ecosystem":"Packagist","package":"mautic/core","fixed_in":["3.3.4","4.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mautic/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.4"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mautic/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha1"},{"fixed":"4.0.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"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"]},{"source":"osv","ecosystem":"Packagist","package":"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"]}],"products":[{"vendor":"acquia","product":"mautic"},{"vendor":"mautic","product":"mautic"}],"references":[{"url":"https://github.com/mautic/mautic/security/advisories/GHSA-72hm-fx78-xwhc","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27911","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2021-27911.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-72hm-fx78-xwhc"},{"url":"https://github.com/mautic/mautic","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-27911","title":"XSS vulnerability on contacts view","description":"Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.","status":"published","published":"2021-08-30T15:55:12.869Z","modified":"2024-09-16T22:30:01.569Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-1999","description":"Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.","status":"published","published":"2021-08-30T15:55:12Z","modified":"2024-09-16T22:30:01Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:02.424132Z"}],"ghsa":[{"id":"GHSA-72hm-fx78-xwhc","title":"XSS vulnerability on contacts view","description":"### Impact\nMautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc. \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","status":"published","published":"2021-09-01T18:40:40Z","modified":"2024-02-07T18:13:36Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:36.076201Z"}],"nvd":[{"id":"CVE-2021-27911","description":"Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.","status":"published","published":"2021-08-30T16:15:07.347Z","modified":"2026-06-17T03:45:36.137Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"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"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:57.67549Z"}],"osv":[{"id":"CVE-2021-27911","description":"Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.","status":"published","published":"2021-08-30T16:15:07.347Z","modified":"2026-10-20T10:53:41.165170502Z","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"}],"updated_at":"2026-11-02T15:44:19.129331Z"},{"id":"GHSA-72hm-fx78-xwhc","title":"XSS vulnerability on contacts view","description":"### Impact\nMautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc. \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","status":"published","published":"2021-09-01T18:40:40Z","modified":"2026-07-08T06:29:24.022075989Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:40.308826Z"}]}}