EUVD-2026-79504
GHSA-rvm5-mg98-27w7
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (ff5b8ace-8b95-4078-9743-eac1ca5451de) · only source for this CVE.
CVSS VectorVendor: ff5b8ace-8b95-4078-9743-eac1ca5451de
Lifecycle Timeline
1DescriptionCVE.org
Concrete CMS 9 before 9.5.3 authorized the dashboard sitemap reorder action (Concrete\Controller\Backend\Dashboard\SitemapUpdate) using only the global access_sitemap task permission and did not check per-page edit permission before updating each page's display order. As a result, an authenticated user granted sitemap access could change the display order (cDisplayOrder) of any pages they had no rights to edit, altering the order in which those pages render in navigation, breadcrumb, and page-list output. The reorder action additionally validated no CSRF token, so the write could be triggered by a forged request. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.1 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Winston Crooker for reporting.
AnalysisAI
Concrete CMS 9.0.0 through 9.5.2 lets an authenticated user who holds only the global access_sitemap permission reorder any page in the site tree, including pages they have no rights to edit, because the dashboard sitemap reorder controller (Concrete\Controller\Backend\Dashboard\SitemapUpdate) never checks per-page edit permission before writing each page's cDisplayOrder value. The same action validates no CSRF token, so a forged request from a sitemap-privileged victim's browser can perform the write silently, changing the order in which pages appear in navigation menus, breadcrumbs, and page lists. …
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Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)
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External POC / Exploit Code
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