{"action":"Upgrade mautic/core to 3.3.4 or later.","affected":[{"fixed":"3.3.4","introduced":"0"},{"fixed":"4.0.0","introduced":"4.0.0-alpha1"}],"component":"mautic/core","cve_ids":["CVE-2021-27911"],"ecosystem":"Packagist","epss":0.00642,"exploited":false,"fixed_versions":["3.3.4","4.0.0"],"ghsa_id":"GHSA-72hm-fx78-xwhc","id":"tcs_01M5KEXJXQQQ6G32G6VQWAXM87","modified_at":"2026-07-08T06:29:24.022075989Z","published_at":"2021-09-01T18:40:40Z","references":["https://osv.dev/vulnerability/GHSA-72hm-fx78-xwhc","https://github.com/mautic/mautic/security/advisories/GHSA-72hm-fx78-xwhc","https://nvd.nist.gov/vuln/detail/CVE-2021-27911","https://github.com/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2021-27911.yaml","https://github.com/mautic/mautic"],"severity":{"label":"high","score":8.3},"sources":[{"source":"osv","source_id":"GHSA-72hm-fx78-xwhc","url":"https://osv.dev/vulnerability/GHSA-72hm-fx78-xwhc"}],"summary":"XSS vulnerability on contacts view"}