{"id":82205,"date":"2026-07-19T00:47:03","date_gmt":"2026-07-18T21:17:03","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-57857-flow-payment-plugin-for-wordpress-reflected-cross-site-scripting-via-error_message-parameter\/"},"modified":"2026-07-19T00:47:03","modified_gmt":"2026-07-18T21:17:03","slug":"cve-2026-57857-flow-payment-plugin-for-wordpress-reflected-cross-site-scripting-via-error_message-parameter","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-57857-flow-payment-plugin-for-wordpress-reflected-cross-site-scripting-via-error_message-parameter\/","title":{"rendered":"CVE-2026-57857 &#8211; Flow Payment Plugin for WordPress Reflected Cross-Site Scripting via error_message Parameter"},"content":{"rendered":"<p>CVE ID :CVE-2026-57857<\/p>\n<p>  Published : July 18, 2026, 9:17 p.m. | 23\u00a0minutes ago<\/p>\n<p>  Description :The Flow Payment plugin for WordPress (flow.cl) version 3.0.8 is vulnerable to reflected cross-site scripting on the WooCommerce checkout page. When the plugin handles an order cancellation, the error_message GET parameter is passed directly to wc_add_notice() in flowpayment-fl.php (lines 57-58) without input sanitization (for example sanitize_text_field()) or output escaping (for example esc_html()) before being rendered in the checkout notice HTML. An unauthenticated attacker can craft a URL containing a JavaScript payload in the error_message parameter (for example \/checkout\/?add-to-cart={product-id}&amp;cancel_order=true&amp;error_message={payload}); when a victim with an active WooCommerce checkout session follows the link, the payload executes in the victim&#8217;s browser in the origin of the WordPress site.<\/p>\n<p>  Severity: 7.2 | HIGH<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-57857 Published : July 18, 2026, 9:17 p.m. | 23\u00a0minutes ago Description :The Flow Payment plugin for WordPress (flow.cl) version 3.0.8 is vulnerable to reflected cross-site scripting on the WooCommerce checkout page. When the plugin handles an order cancellation, the error_message GET parameter is passed directly to wc_add_notice() in flowpayment-fl.php (lines 57-58) without &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-82205","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=82205"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82205\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}