{"id":23457,"date":"2026-09-16T04:31:35","date_gmt":"2026-09-15T20:31:35","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81920"},"modified":"2026-09-16T04:31:35","modified_gmt":"2026-09-15T20:31:35","slug":"cve-2026-81920","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81920","title":{"rendered":"CVE-2026-81920 &#8211; Concrete CMS below 9.5.3 was vulnerable to Cross-Site Request Forgery in the dashboard SEO"},"content":{"rendered":"<p>Concrete CMS below 9.5.3 was vulnerable to Cross-Site Request Forgery in the dashboard SEO Excluded Words page. The reset() controller action cleared the administrator-configured reserved-word list (concrete.seo.exclude_words) but did not validate the anti-CSRF token that the reset modal emitted, and it did not restrict the request to the POST method. A remote attacker who lured an authenticated user with SEO access to a crafted page could revert the reserved-word list to its default and silently alter future URL-slug generation for pages, files, topics, and other objects created through the Text urlify service, undoing the site&#8217;s configured SEO slug policy.\u00a0The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.3 with vector CVSS:4.0\/AV:N\/AC:L\/AT:P\/PR:N\/UI:P\/VC:N\/VI:L\/VA:N\/SC:N\/SI:N\/SA:N. Thanks riodrwn for reporting.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Concrete CMS below 9.5.3 was vulnerable to Cross-Site Request Forgery in the dashboard SEO Excluded Words page. The reset() controller action cleared the administrator-configured reserved-word list (c<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-23457","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/23457","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=23457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=23457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=23457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}