{"id":20805,"date":"2026-09-11T04:31:09","date_gmt":"2026-09-10T20:31:09","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-84432"},"modified":"2026-09-11T04:31:09","modified_gmt":"2026-09-10T20:31:09","slug":"cve-2026-84432","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-84432","title":{"rendered":"CVE-2026-84432 &#8211; Concrete CMS 9 through  9.5.2 did not validate an anti-CSRF token in the Boards custom slo"},"content":{"rendered":"<p>Concrete CMS 9 through  9.5.2 did not validate an anti-CSRF token in the Boards custom slot dialog controller (concrete\/controllers\/dialog\/board\/custom_slot.php) saveTemplate() action. The action created a board_slot_proxy Block and dispatched an AddCustomSlotToBoardCommand against a board instance while gating only on the per-resource canEditBoardContents() permission, so a crafted cross-site request could cause a user holding board-edit permission with an active session to write attacker-chosen slot and template data to a board under their own authority. The state-changing database write completed before any downstream rendering, so the forged request succeeded even when the HTTP response returned a non-200 status.\u00a0The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 5.3 with vector CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:P\/VC:N\/VI:L\/VA:N\/SC:N\/SI:N\/SA:N. Thanks Winston Crooker for reporting.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Concrete CMS 9 through  9.5.2 did not validate an anti-CSRF token in the Boards custom slot dialog controller (concrete\/controllers\/dialog\/board\/custom_slot.php) saveTemplate() action. The action crea<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-20805","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/20805","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}