{"id":"CVE-2020-35124","aliases":["EUVD-2021-0482","GHSA-39wj-j3jc-858m"],"status":"published","title":"XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic","description":"A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02425,"percentile":0.84314,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-01-19T20:43:56Z","modified":"2026-10-20T10:53:17Z","fixes":[{"ecosystem":"Packagist","package":"mautic/core","fixed_in":["3.2.4","2.16.5"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mautic/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.2.4"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mautic/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.16.5"}]}]},{"source":"osv","ecosystem":"Packagist","package":"mautic/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.2.4"}]}],"versions":["3.0.0","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"]},{"source":"osv","ecosystem":"Packagist","package":"mautic/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.16.5"}]}],"versions":["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","2.2.0","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"]}],"products":[{"vendor":"acquia","product":"mautic"}],"references":[{"url":"https://forum.mautic.org/c/announcements/16","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858m","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/mautic/mautic/commit/20c5dc39b62164f6922ce53ea42cbb4ccec64e57","tags":["web"]},{"url":"https://packagist.org/packages/mautic/core","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35124","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2020-35124.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-39wj-j3jc-858m"}],"sources":{"cve":[{"id":"CVE-2020-35124","description":"A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.","status":"published","published":"2021-01-28T05:37:56Z","modified":"2024-08-04T16:55:10.64Z","updated_at":"2026-11-02T14:35:57.975444Z"}],"euvd":[{"id":"EUVD-2021-0482","description":"A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.","status":"published","published":"2021-01-28T05:37:56Z","modified":"2024-08-04T16:55:10Z","updated_at":"2026-11-03T03:07:06.885366Z"}],"ghsa":[{"id":"GHSA-39wj-j3jc-858m","title":"XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic","description":"### Impact\nThis is a cross-site scripting vulnerability which affects every version of Mautic and could allow an attacker unauthorised administrator level access to Mautic.\n\nThis vulnerability was reported by Naveen Sunkavally at Horizon3.ai.\n\n### Patches\nUpgrade to 3.2.4 or 2.16.5.\n\nLink to patch for 2.x versions: https://github.com/mautic/mautic/compare/2.16.4...2.16.5.diff\n\nLink to patch for 3.x versions: https://github.com/mautic/mautic/compare/3.2.2...3.2.4.diff\n\n### Workarounds\nNone\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Post in https://forum.mautic.org/c/support\n* Email us at security@mautic.org","status":"published","published":"2021-01-19T20:43:56Z","modified":"2024-02-05T10:57:53Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:35.293818Z"}],"nvd":[{"id":"CVE-2020-35124","description":"A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.","status":"published","published":"2021-01-28T06:15:13.373Z","modified":"2026-06-17T03:13:24.767Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:30.596418Z"}],"osv":[{"id":"CVE-2020-35124","description":"A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.","status":"published","published":"2021-01-28T06:15:13.373Z","modified":"2026-10-20T10:53:17.588296049Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:16.612899Z"},{"id":"GHSA-39wj-j3jc-858m","title":"XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic","description":"### Impact\nThis is a cross-site scripting vulnerability which affects every version of Mautic and could allow an attacker unauthorised administrator level access to Mautic.\n\nThis vulnerability was reported by Naveen Sunkavally at Horizon3.ai.\n\n### Patches\nUpgrade to 3.2.4 or 2.16.5.\n\nLink to patch for 2.x versions: https://github.com/mautic/mautic/compare/2.16.4...2.16.5.diff\n\nLink to patch for 3.x versions: https://github.com/mautic/mautic/compare/3.2.2...3.2.4.diff\n\n### Workarounds\nNone\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Post in https://forum.mautic.org/c/support\n* Email us at security@mautic.org","status":"published","published":"2021-01-19T20:43:56Z","modified":"2026-07-08T06:00:55.187626721Z","cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:35.406455Z"}]}}