{"id":"CVE-2023-40555","aliases":["EUVD-2023-45126","GHSA-9fmf-6xvc-qw23"],"status":"published","title":"WordPress Flatsome Theme \u003c= 3.17.5 is vulnerable to PHP Object Injection","description":"Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive WooCommerce Theme.This issue affects Flatsome | Multi-Purpose Responsive WooCommerce Theme: from n/a through 3.17.5.","severity":{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00602,"percentile":0.49118,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2023-12-20T13:45:19Z","modified":"2026-06-17T06:18:28Z","products":[{"vendor":"ux-themes","product":"flatsome | multi-purpose responsive woocommerce theme"},{"vendor":"uxthemes","product":"flatsome"}],"references":[{"url":"https://patchstack.com/database/vulnerability/flatsome/wordpress-flatsome-theme-3-17-5-unauthenticated-php-object-injection-vulnerability?_s_id=cve","tags":["vdb-entry","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40555"},{"url":"https://github.com/advisories/GHSA-9fmf-6xvc-qw23"}],"sources":{"cve":[{"id":"CVE-2023-40555","title":"WordPress Flatsome Theme \u003c= 3.17.5 is vulnerable to PHP Object Injection","description":"Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive WooCommerce Theme.This issue affects Flatsome | Multi-Purpose Responsive WooCommerce Theme: from n/a through 3.17.5.","status":"published","published":"2023-12-20T13:45:19.115Z","modified":"2026-04-28T16:08:36.673Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:35:21.612665Z"}],"euvd":[{"id":"EUVD-2023-45126","description":"Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive WooCommerce Theme.This issue affects Flatsome | Multi-Purpose Responsive WooCommerce Theme: from n/a through 3.17.5.","status":"published","published":"2023-12-20T13:45:19Z","modified":"2026-04-28T16:08:36Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T19:24:06.820124Z"}],"ghsa":[{"id":"GHSA-9fmf-6xvc-qw23","title":"Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive...","description":"Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive WooCommerce Theme.This issue affects Flatsome | Multi-Purpose Responsive WooCommerce Theme: from n/a through 3.17.5.","status":"published","published":"2023-12-20T15:30:19Z","modified":"2026-04-28T21:34:31Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:07:45.281583Z"}],"nvd":[{"id":"CVE-2023-40555","description":"Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive WooCommerce Theme.This issue affects Flatsome | Multi-Purpose Responsive WooCommerce Theme: from n/a through 3.17.5.","status":"published","published":"2023-12-20T14:15:20.193Z","modified":"2026-06-17T06:18:28.037Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:08:56.329586Z"}]}}