{"id":31813,"date":"2026-10-01T20:32:10","date_gmt":"2026-10-01T12:32:10","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-103858"},"modified":"2026-10-01T20:32:10","modified_gmt":"2026-10-01T12:32:10","slug":"cve-2026-103858","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-103858","title":{"rendered":"CVE-2026-103858 &#8211; MISP contains an incomplete authorization check in the discussion posting functionality. W"},"content":{"rendered":"<p>MISP contains an incomplete authorization check in the discussion posting functionality. When a user submits a post to a thread or replies to an existing post, the application only verified whether the target thread was restricted to a single organization (org-only distribution). It did not enforce the full thread access control list, including sharing-group membership and event-level visibility.<\/p>\n<p>As a result, an authenticated user who is outside the relevant sharing group or who does not have visibility on the associated event could:<\/p>\n<p>&#8211; Read the thread title and the content of the quoted post<\/p>\n<p>&#8211; Submit a new post into the discussion thread<\/p>\n<p>This constitutes both an information disclosure (reading restricted thread and post content) and an integrity issue (injecting content into a thread the user is not authorized to participate in).<\/p>\n<p>Affected: &lt;2.5.48<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MISP contains an incomplete authorization check in the discussion posting functionality. When a user submits a post to a thread or replies to an existing post, the application only verified whether th<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-31813","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/31813","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=31813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=31813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=31813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}