{"id":9776,"date":"2025-08-05T18:52:16","date_gmt":"2025-08-05T18:52:16","guid":{"rendered":"http:\/\/localhost\/?p=9776"},"modified":"2025-08-05T18:52:16","modified_gmt":"2025-08-05T18:52:16","slug":"concrete-cms-9-through-942-and-below-8521-is-vulnerable-to-reflected-cross-site-scripting-xss-in-con","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=9776","title":{"rendered":"Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page"},"content":{"rendered":"<div style=\"font-family: Arial, sans-serif; max-width: 1200px; margin: 0 auto;\">\n<h2 style=\"color: #333; border-bottom: 2px solid #ffcc00; padding-bottom: 10px;\">CVE Details<\/h2>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 20px;\">\n<div style=\"padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1);\">\n<h3 style=\"margin-top: 0; \">Basic Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Title<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Type<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">cve<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Published<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">2025-08-05T22:37:14.759Z<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Modified<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">2025-08-05T22:37:14.759Z<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div style=\"padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1);\">\n<h3 style=\"margin-top: 0; \">Product Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Vendor<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">Concrete CMS<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Product<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">Concrete CMS<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Version<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">9.0.0<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<div style=\"padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); margin-bottom: 20px;\">\n<h3 style=\"margin-top: 0; \">CVSS Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Base Score<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd; color: #ffcc00; font-weight: bold;\">4.8 (MEDIUM)<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Attack Vector<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:H\/UI:P\/VC:L\/VI:L\/VA:N\/SC:N\/SI:N\/SA:N<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div style=\"padding: 15px; border-radius: 5px; margin-bottom: 20px;\">\n<h4 style=\"margin-top: 0; \">Affected Products<\/h4>\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li>Concrete CMS Concrete CMS 9.0.0<\/li>\n<li>Concrete CMS Concrete CMS 5.6<\/li>\n<\/ul>\n<\/div>\n<div style=\"padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); margin-bottom: 20px;\">\n<h3 style=\"margin-top: 0; \">Additional Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">CWE List<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">CWE-20<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border-bottom: 1px solid #ddd;\">Source<\/th>\n<td style=\"padding: 8px; border-bottom: 1px solid #ddd;\">ConcreteCMS<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div style=\"padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); margin-bottom: 20px;\">\n<h3 style=\"margin-top: 0; \">Description<\/h3>\n<div style=\"padding: 15px; border-left: 4px solid #4CAF50; \">Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page.\u00a0Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions.\u00a0The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:H\/UI:P\/VC:L\/VI:L\/VA:N\/SC:N\/SI:N\/SA:N.\u00a0Thanks  Fortbridge https:\/\/fortbridge.co.uk\/ \u00a0for performing a penetration test and vulnerability assessment on Concrete CMS and reporting this issue.<\/div>\n<\/div>\n<div style=\"padding: 15px; border-radius: 5px; margin-bottom: 20px;\">\n<h4 style=\"margin-top: 0; \">References<\/h4>\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li><a href=\"https:\/\/documentation.concretecms.org\/developers\/introduction\/version-history\/8521-release-notes\" target=\"_blank\">https:\/\/documentation.concretecms.org\/developers\/introduction\/version-history\/8521-release-notes<\/a><\/li>\n<li><a href=\"https:\/\/documentation.concretecms.org\/9-x\/developers\/introduction\/version-history\/943-release-notes\" target=\"_blank\">https:\/\/documentation.concretecms.org\/9-x\/developers\/introduction\/version-history\/943-release-notes<\/a><\/li>\n<li><a href=\"https:\/\/www.concretecms.org\/download\" target=\"_blank\">https:\/\/www.concretecms.org\/download<\/a><\/li>\n<\/ul>\n<\/div>\n<div style=\"text-align: center; margin-top: 30px;\">\n<a href=\"\" target=\"_blank\" style=\"display: inline-block; background-color: #4CAF50; color: white; padding: 12px 24px; text-decoration: none; border-radius: 4px; font-weight: bold; transition: background-color 0.3s;\">View Full CVE Details<\/a>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>CVE Details Basic Information Title Concrete CMS 9 through 9.4.2 and below 8.5.21 is vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard 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