{"id":40378,"date":"2026-10-16T16:33:11","date_gmt":"2026-10-16T08:33:11","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-19867"},"modified":"2026-10-16T16:33:11","modified_gmt":"2026-10-16T08:33:11","slug":"cve-2026-19867","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-19867","title":{"rendered":"CVE-2026-19867 [MEDIUM] &#8211; Mattermost versions 11.10.x"},"content":{"rendered":"<p>Mattermost versions 11.10.x &lt;= 11.10.0, 11.9.x &lt;= 11.9.1, 11.8.x &lt;= 11.8.5, 11.7.x &lt;= 11.7.10 fail to cap the number and size of mention keys stored in a user&#039;s notification properties, and to bound the quadratic multibyte-keyword matching performed for each post, which allows an authenticated user to degrade post-processing latency and consume excessive CPU on behalf of other members of any channel they share via storing an oversized notify_props.mention_keys list on their own profile.. Mattermost Advisory ID: MMSA-2026-00773<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mattermost versions 11.10.x<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-40378","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/40378","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=40378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}