{"id":"CVE-2026-42694","kind":"vulnerability","aliases":["CVE-2026-42694"],"related":[],"title":"Kirki WordPress plugin: stored script injection through web pages, up to 6.4.0","description":"Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Themeum Kirki kirki allows Code Injection.This issue affects Kirki: from n/a through 6.4.0.","summary":"Kirki, a WordPress theme-options framework by Themeum, has a cross-site scripting flaw that lets injected HTML and script run in a visitor's page. An attacker who can get markup into a Kirki-controlled field can run scripts in the browser of anyone who views it.","severity":"medium","cvss":4.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["kirki","package","themes","wordpress"],"not_affected_if":["kirki-not-installed"],"how_to_check":"- Check the installed Kirki version in the WordPress admin plugins list or in the theme's bundled Kirki directory; compare against `6.4.0`.","fix":"- Kirki versions through `6.4.0` are affected; the sources do not name a fixed version.","status":"open","published_at":"2026-10-29T16:18:09+00:00","first_seen_at":"2026-10-29T16:25:59+00:00","triaged_at":"2026-10-29T16:31:59+00:00","updated_at":"2026-10-29T16:31:59+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-10-29T16:31:59Z","model":"claude-haiku-5-5","output":{"fix":"- Kirki versions through `6.4.0` are affected; the sources do not name a fixed version.","reach":"internet","title":"Kirki WordPress plugin: stored script injection through web pages, up to 6.4.0","impact":"medium","summary":"Kirki, a WordPress theme-options framework by Themeum, has a cross-site scripting flaw that lets injected HTML and script run in a visitor's page. An attacker who can get markup into a Kirki-controlled field can run scripts in the browser of anyone who views it.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","kirki","themes"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Scripts run in visitors' browsers on the affected site.","analyst_note":"Find the fixed Kirki version and the affected input path at the NVD entry or the Themeum changelog; the sources give only 'through 6.4.0'.","how_to_check":"- Check the installed Kirki version in the WordPress admin plugins list or in the theme's bundled Kirki directory; compare against `6.4.0`.\n- unknown for further checks; the sources do not describe the affected field or setting.","plain_action":"","needs_analyst":true,"not_affected_if":["kirki-not-installed"],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000666,"input_tokens":4121,"output_tokens":507,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-42694':15A,18A '6.4.0':12A,101C 'affect':96C 'allow':92C 'anyon':70B 'attack':52B 'basic':85C 'browser':68B 'code':93C 'control':61B 'cross':35B 'cross-sit':34B 'cve':13A,16A 'field':62B 'flaw':38B 'framework':29B 'get':55B 'html':42B,79C 'improp':73C 'inject':6A,41B 'injection.this':94C 'issu':95C 'kirki':1A,19B,23B,60B,90C,91C,97C 'kirki-control':59B 'let':40B 'markup':56B 'n/a':99C 'neutral':74C 'option':28B 'packag':20B 'page':9A,50B,84C 'plugin':3A 'relat':78C 'run':45B,64B 'script':5A,37B,44B,65B,77C 'script-rel':76C 'site':36B 'store':4A 'tag':80C 'theme':21B,27B 'theme-opt':26B 'themeum':31B,89C 'view':72B 'visitor':48B 'vulner':87C 'web':8A,83C 'wordpress':2A,22B,25B 'xss':86C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T16:18:09+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-42694","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42694","severity":null,"published_at":"2026-10-29T16:18:09+00:00","modified_at":"2026-10-29T16:20:19+00:00","first_seen_at":"2026-10-29T16:25:59+00:00","fetched_at":"2026-10-29T16:25:59+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"}