Vulnerabilities in Concrete CMS
139 resultsCVE-2026-18111HIGHConcrete CMS below 9.5.4 allows privilege escalation because adding users and assigning groups do not require additional identity verificationEPSS 0.2%CVE-2026-81912MEDIUMConcrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups featureEPSS 0.2%CVE-2026-8197HIGHConcrete CMS 9.5.0 and below is vulnerable to Stored XSS via OAuth integration nameEPSS 0.2%CVE-2026-8327MEDIUMConcrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass.EPSS 0.2%CVE-2026-81920LOWConcrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Dashboard SEO Excluded Words Reset EndpointEPSS 0.2%CVE-2026-7887LOWFor Concrete CMS 9.5.0 and below, OAuth 2.0 Authorization-Code Handler Bypasses Account StatusEPSS 0.2%CVE-2026-8426HIGHConcrete CMS 9.5.0 and below is vulnerable to CSRF on prepare_remote_upgrade() leading to one-request RCE via package overwriteEPSS 0.2%CVE-2026-8421HIGHConcrete CMS 9.5.0 and below is vulnerable to CSRF on install_package() with conditional token bypass leading to RCEEPSS 0.2%CVE-2026-81897HIGHConcrete CMS below version 9.5.3 is vulnerable to Stored XSS via Express form Text control save_controlEPSS 0.2%CVE-2026-18425LOWIDOR in Concrete CMS 9.0.0 through 9.5.2 dashboard sitemap reorder (SitemapUpdate::updateDisplayOrder) allows an authenticated sitemap user to reorder arbitrary pagesEPSS 0.2%CVE-2026-7888HIGHConcrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form block, and File/Set components that lack the allowed_classes restriction.EPSS 0.2%CVE-2026-7890LOWConcrete CMS 9.5.0 is vulnerable to SSRF via RSS Displayer BlockEPSS 0.2%CVE-2026-8139LOWConcrete CMS 9.5.0 and below is vulnerable to Stored XSS via external-link page cvNameEPSS 0.1%CVE-2026-8353LOWConcrete CMS version 9.0 to 9.5.0 is vulnerable to Stored XSS via page name in atomik themeEPSS 0.1%CVE-2026-81919LOWConcrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Block Arrangement EndpointEPSS 0.1%CVE-2026-10721HIGHConcrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize() calls in the in Permission, Cache, and Search componentsEPSS 0.1%CVE-2026-8409LOWConcrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/deleteEPSS 0.1%CVE-2026-18117HIGHConcrete CMS 9.0.0 to 9.5.2 is vulnerable to Stored XSS in Custom Page Alias NameEPSS 0.1%CVE-2026-8410LOWConcrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/bulk/deleteEPSS 0.1%CVE-2026-8245MEDIUMConcrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injectionEPSS 0.1%