{"id":"CVE-2026-48201","kind":"vulnerability","aliases":["CVE-2026-48201"],"related":[],"title":"Fast Velocity Minify WordPress plugin: unauthenticated XSS through 3.5.7","description":"Unauthenticated Cross Site Scripting (XSS) in Fast Velocity Minify <= 3.5.7 versions.","summary":"Fast Velocity Minify, a WordPress plugin that minifies assets, contains a cross-site scripting flaw reachable without logging in. An attacker can get script to run in a visitor's browser on affected sites.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["fast-velocity-minify","package","self-hosted","wordpress"],"not_affected_if":["plugin-not-installed","plugin-updated-past-3.5.7"],"how_to_check":"- Check the installed plugin version in the WordPress admin under Plugins, or in `wp-content/plugins/fast-velocity-minify/`\n- Compare the installed version against `3.5.7`; versions up to and including `3.5.7` are listed as affected","fix":"- Fast Velocity Minify: versions after `3.5.7` (fixed version not stated in the sources)","status":"open","published_at":"2026-10-30T19:18:25+00:00","first_seen_at":"2026-10-30T19:25:29+00:00","triaged_at":"2026-10-30T19:26:02+00:00","updated_at":"2026-10-30T19:26:02+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-30T19:26:02Z","model":"claude-haiku-5-5","output":{"fix":"- Fast Velocity Minify: versions after `3.5.7` (fixed version not stated in the sources)","reach":"internet","title":"Fast Velocity Minify WordPress plugin: unauthenticated XSS through 3.5.7","impact":"medium","summary":"Fast Velocity Minify, a WordPress plugin that minifies assets, contains a cross-site scripting flaw reachable without logging in. An attacker can get script to run in a visitor's browser on affected sites.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","fast-velocity-minify","self-hosted"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"script runs in visitors' browsers on the affected site","analyst_note":"Confirm the fixed plugin version and the vulnerable parameter or endpoint from the NVD entry or the plugin's changelog.","how_to_check":"- Check the installed plugin version in the WordPress admin under Plugins, or in `wp-content/plugins/fast-velocity-minify/`\n- Compare the installed version against `3.5.7`; versions up to and including `3.5.7` are listed as affected","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed","plugin-updated-past-3.5.7"],"who_is_affected":"Sites running the Fast Velocity Minify WordPress plugin at version 3.5.7 or older. The sources do not describe any special configuration; the flaw is listed as unauthenticated, so a logged-out visitor can reach it.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000702,"input_tokens":4074,"output_tokens":589,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':11A,14A '-48201':12A,15A '3.5.7':9A,69C 'affect':58B 'asset':33B 'attack':46B 'browser':56B 'contain':34B 'cross':37B,61C 'cross-sit':36B 'cve':10A,13A 'fast':1A,17B,25B,66C 'fast-velocity-minifi':16B 'flaw':40B 'get':48B 'host':23B 'log':43B 'minifi':3A,19B,27B,32B,68C 'packag':20B 'plugin':5A,30B 'reachabl':41B 'run':51B 'script':39B,49B,63C 'self':22B 'self-host':21B 'site':38B,59B,62C 'unauthent':6A,60C 'veloc':2A,18B,26B,67C 'version':70C 'visitor':54B 'without':42B 'wordpress':4A,24B,29B 'xss':7A,64C","nicknames":[],"mitigations":[],"who_affected":"Sites running the Fast Velocity Minify WordPress plugin at version 3.5.7 or older. The sources do not describe any special configuration; the flaw is listed as unauthenticated, so a logged-out visitor can reach it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-30T19:18:25+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-48201","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48201","severity":null,"published_at":"2026-10-30T19:18:25+00:00","modified_at":"2026-10-30T19:22:27+00:00","first_seen_at":"2026-10-30T19:25:29+00:00","fetched_at":"2026-10-30T19:25:29+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}