{"id":"CVE-2026-25467","kind":"vulnerability","aliases":["CVE-2026-25467"],"related":[],"title":"ThemeGrill User Registration plugin: stored XSS through script tags, up to 5.3.0","description":"Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in ThemeGrill User Registration user-registration allows Code Injection.This issue affects User Registration: from n/a through 5.3.0.","summary":"The ThemeGrill User Registration WordPress plugin fails to neutralize script-related HTML tags in a page, which lets injected code run in the browser of whoever views it. An attacker can run scripts in a visitor's or administrator's session on the affected site.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","themegrill","user-registration","wordpress"],"not_affected_if":["newer-version","plugin-not-installed"],"how_to_check":"- Check the installed version of User Registration (user-registration) in the WordPress plugins screen or `wp plugin get user-registration --field=version`\n- Compare it against the affected range: from n/a through `5.3.0`","fix":"- User Registration: unknown (the sources give no fixed version)","status":"open","published_at":"2026-10-29T14:17:54+00:00","first_seen_at":"2026-10-29T14:25:23+00:00","triaged_at":"2026-10-29T14:26:09+00:00","updated_at":"2026-10-29T14:26:09+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-29T14:26:09Z","model":"claude-haiku-5-5","output":{"fix":"- User Registration: unknown (the sources give no fixed version)","reach":"internet","title":"ThemeGrill User Registration plugin: stored XSS through script tags, up to 5.3.0","impact":"medium","summary":"The ThemeGrill User Registration WordPress plugin fails to neutralize script-related HTML tags in a page, which lets injected code run in the browser of whoever views it. An attacker can run scripts in a visitor's or administrator's session on the affected site.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","user-registration","themegrill"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker scripts run in visitor or admin browsers on the site","analyst_note":"Find the fixed version and the vulnerable input or page from the Wordfence or ThemeGrill advisory; the NVD entry gives only the affected range.","how_to_check":"- Check the installed version of User Registration (user-registration) in the WordPress plugins screen or `wp plugin get user-registration --field=version`\n- Compare it against the affected range: from n/a through `5.3.0`","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed","newer-version"],"who_is_affected":"Sites running the User Registration plugin from ThemeGrill at version 5.3.0 or earlier. The flaw is a cross-site scripting issue, so exposure depends on whether user-supplied content is rendered back to other users, and the sources do not say which inputs or pages are involved.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000706,"input_tokens":4122,"output_tokens":587,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-25467':15A,18A '5.3.0':12A,103C 'administr':64B 'affect':69B,97C 'allow':93C 'attack':55B 'basic':83C 'browser':49B 'code':45B,94C 'cve':13A,16A 'fail':31B 'html':37B,77C 'improp':71C 'inject':44B 'injection.this':95C 'issu':96C 'let':43B 'n/a':101C 'neutral':33B,72C 'packag':19B 'page':41B,82C 'plugin':4A,30B 'registr':3A,23B,28B,89C,92C,99C 'relat':36B,76C 'run':46B,57B 'script':8A,35B,58B,75C 'script-rel':34B,74C 'session':66B 'site':70B 'store':5A 'tag':9A,38B,78C 'themegril':1A,20B,26B,87C 'user':2A,22B,27B,88C,91C,98C 'user-registr':21B,90C 'view':52B 'visitor':61B 'vulner':85C 'web':81C 'whoever':51B 'wordpress':24B,29B 'xss':6A,84C","nicknames":[],"mitigations":[],"who_affected":"Sites running the User Registration plugin from ThemeGrill at version 5.3.0 or earlier. The flaw is a cross-site scripting issue, so exposure depends on whether user-supplied content is rendered back to other users, and the sources do not say which inputs or pages are involved.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T14:17:54+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-25467","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25467","severity":null,"published_at":"2026-10-29T14:17:54+00:00","modified_at":"2026-10-29T14:17:54+00:00","first_seen_at":"2026-10-29T14:25:23+00:00","fetched_at":"2026-10-29T14:25:23+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"}