{"id":"CVE-2026-111737","aliases":["EUVD-2026-108592","GHSA-hhfq-xfxp-vh74"],"status":"published","title":"Speed Optimizer \u003c 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload URL Lists","description":"The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).","severity":{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00185,"percentile":0.08214,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-10-23T06:00:18Z","modified":"2026-10-23T14:20:57Z","products":[{"vendor":"siteground","product":"speed optimizer"},{"vendor":"unknown","product":"speed optimizer"}],"references":[{"url":"https://wpscan.com/vulnerability/308b6173-139d-4940-869d-c9ff1e83c323/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111737"},{"url":"https://wpscan.com/vulnerability/308b6173-139d-4940-869d-c9ff1e83c323"},{"url":"https://github.com/advisories/GHSA-hhfq-xfxp-vh74"}],"sources":{"cve":[{"id":"CVE-2026-111737","title":"Speed Optimizer \u003c 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload URL Lists","description":"The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).","status":"published","published":"2026-10-23T06:00:18.621Z","modified":"2026-10-23T10:46:04.684Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:15.34316Z"}],"euvd":[{"id":"EUVD-2026-108592","description":"The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).","status":"published","published":"2026-10-23T06:00:18Z","modified":"2026-10-23T10:46:04Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T16:59:33.058354Z"}],"ghsa":[{"id":"GHSA-hhfq-xfxp-vh74","title":"The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its...","description":"The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).","status":"published","published":"2026-10-23T06:31:27Z","modified":"2026-10-23T12:32:39Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:14:19.493811Z"}],"nvd":[{"id":"CVE-2026-111737","description":"The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).","status":"published","published":"2026-10-23T06:17:05.79Z","modified":"2026-10-23T14:20:57.92Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:13:02.724605Z"}]}}