{"id":"CVE-2026-116409","kind":"vulnerability","aliases":["CVE-2026-116409"],"related":[],"title":"WooCommerce upsell plugin: reflected XSS lets attackers run scripts in shoppers' browsers","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WP Swings Upsell Order Bump Offer for WooCommerce upsell-order-bump-offer-for-woocommerce allows Reflected XSS.This issue affects Upsell Order Bump Offer for WooCommerce: from n/a through 3.1.6.","summary":"Upsell Order Bump Offer for WooCommerce, a WordPress plugin from WP Swings, has a reflected cross-site scripting flaw in versions up to and including 3.1.6. An attacker can craft a link that runs script in the browser of a user who opens it, such as a store admin.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","woocommerce","wordpress","wp-swings"],"not_affected_if":["plugin-not-installed"],"how_to_check":"- Check the installed plugin version under WordPress Plugins, or in `wp-content/plugins/upsell-order-bump-offer-for-woocommerce/`.\n- Look for the plugin slug `upsell-order-bump-offer-for-woocommerce` in your plugin list.","fix":"- Move to a version later than `3.1.6` (fixed version not stated in the sources).","status":"open","published_at":"2026-10-29T11:17:31+00:00","first_seen_at":"2026-10-29T11:24:28+00:00","triaged_at":"2026-10-29T11:25:30+00:00","updated_at":"2026-10-29T11:25:30+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-29T11:25:30Z","model":"claude-haiku-5-5","output":{"fix":"- Move to a version later than `3.1.6` (fixed version not stated in the sources).","reach":"internet","title":"WooCommerce upsell plugin: reflected XSS lets attackers run scripts in shoppers' browsers","impact":"medium","summary":"Upsell Order Bump Offer for WooCommerce, a WordPress plugin from WP Swings, has a reflected cross-site scripting flaw in versions up to and including 3.1.6. An attacker can craft a link that runs script in the browser of a user who opens it, such as a store admin.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","woocommerce","wp-swings"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"script runs in a logged-in admin's browser session","analyst_note":"Confirm the fixed version and the vulnerable parameter from the NVD entry or the WP Swings changelog (https://nvd.nist.gov/vuln/detail/CVE-2026-116409).","how_to_check":"- Check the installed plugin version under WordPress Plugins, or in `wp-content/plugins/upsell-order-bump-offer-for-woocommerce/`.\n- Look for the plugin slug `upsell-order-bump-offer-for-woocommerce` in your plugin list.","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed"],"who_is_affected":"Sites running the Upsell Order Bump Offer for WooCommerce plugin at version 3.1.6 or earlier. Reflected XSS needs a victim to open a crafted link, so exposure depends on whether the plugin's vulnerable endpoint reflects input on pages users visit. Sites without this plugin can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000744,"input_tokens":4157,"output_tokens":656,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-116409':15A,18A '-2026':14A,17A '3.1.6':51B,118C 'admin':74B 'affect':108C 'allow':104C 'attack':7A,53B 'browser':12A,63B 'bump':27B,93C,100C,111C 'craft':55B 'cross':41B,84C 'cross-sit':40B,83C 'cve':13A,16A 'flaw':44B 'generat':82C 'improp':75C 'includ':50B 'input':78C 'issu':107C 'let':6A 'link':57B 'n/a':116C 'neutral':76C 'offer':28B,94C,101C,112C 'open':68B 'order':26B,92C,99C,110C 'packag':19B 'page':81C 'plugin':3A,33B 'reflect':4A,39B,105C 'run':8A,59B 'script':9A,43B,60B,86C 'shopper':11A 'site':42B,85C 'store':73B 'swing':24B,36B,90C 'upsel':2A,25B,91C,98C,109C 'upsell-order-bump-offer-for-woocommerc':97C 'user':66B 'version':46B 'vulner':87C 'web':80C 'woocommerc':1A,20B,30B,96C,103C,114C 'wordpress':21B,32B 'wp':23B,35B,89C 'wp-swing':22B 'xss':5A 'xss.this':106C","nicknames":[],"mitigations":[],"who_affected":"Sites running the Upsell Order Bump Offer for WooCommerce plugin at version 3.1.6 or earlier. Reflected XSS needs a victim to open a crafted link, so exposure depends on whether the plugin's vulnerable endpoint reflects input on pages users visit. Sites without this plugin can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T11:17:31+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-2026-116409","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116409","severity":null,"published_at":"2026-10-29T11:17:31+00:00","modified_at":"2026-10-29T11:17:31+00:00","first_seen_at":"2026-10-29T11:24:28+00:00","fetched_at":"2026-10-29T11:24:28+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"}