{"action":"Upgrade mautic/core to 5.2.11 or later.","affected":[{"introduced":"1.3.0"},{"fixed":"5.2.11","introduced":"5.0.0"},{"fixed":"6.0.9","introduced":"6.0.0"},{"fixed":"7.1.2","introduced":"7.0.0"}],"component":"mautic/core","cve_ids":["CVE-2026-9558"],"ecosystem":"Packagist","epss":0.00571,"exploited":false,"fixed_versions":["5.2.11","6.0.9","7.1.2"],"ghsa_id":"GHSA-9fx4-7cmj-47vg","id":"tcs_01M5KF0142A5NV6SV7YNCV2V9A","modified_at":"2026-09-10T03:51:11.279599690Z","published_at":"2026-07-02T19:48:08Z","references":["https://osv.dev/vulnerability/GHSA-9fx4-7cmj-47vg","https://github.com/mautic/mautic/security/advisories/GHSA-9fx4-7cmj-47vg","https://nvd.nist.gov/vuln/detail/CVE-2026-9558","https://github.com/mautic/mautic"],"severity":{"label":"critical","score":9.9},"sources":[{"source":"osv","source_id":"GHSA-9fx4-7cmj-47vg","url":"https://osv.dev/vulnerability/GHSA-9fx4-7cmj-47vg"}],"summary":"Mautic has Server-Side Template Injection (SSTI) in Theme Templates"}