{"id":20786,"date":"2026-09-11T04:31:07","date_gmt":"2026-09-10T20:31:07","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68527"},"modified":"2026-09-11T04:31:07","modified_gmt":"2026-09-10T20:31:07","slug":"cve-2026-68527","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68527","title":{"rendered":"CVE-2026-68527 &#8211; Concrete CMS versions 8.3.0 through 9.5.2 are vulnerable to an authorization bypass in the"},"content":{"rendered":"<p>Concrete CMS versions 8.3.0 through 9.5.2 are vulnerable to an authorization bypass in the Calendar event edit dialog (concrete\/controllers\/dialog\/event\/edit.php). The dialog checked permissions against the calendar identifier supplied in the request rather than the calendar owning the targeted event occurrence. A user with the &#8220;Add Event&#8221; permission on a single calendar could read and overwrite events on calendars they were not permitted to access, and could delete an event&#8217;s original local occurrence. Publishing the injected version to the live calendar, which demotes the previously approved version, additionally required the actor&#8217;s approve_calendar_event workflow rights or an auto-approving workflow. The Concrete CMS Security Team gave this a rank of 5.9 with CVSS 4.0 vector\u00a0CVSS:4.0\/AV:N\/AC:L\/AT:P\/PR:H\/UI:N\/VC:L\/VI:H\/VA:L\/SC:N\/SI:N\/SA:N. Thanks Winston Crooker for reporting.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Concrete CMS versions 8.3.0 through 9.5.2 are vulnerable to an authorization bypass in the Calendar event edit dialog (concrete\/controllers\/dialog\/event\/edit.php). The dialog checked permissions again<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-20786","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/20786","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=20786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}