{"id":20471,"date":"2026-09-10T08:31:56","date_gmt":"2026-09-10T00:31:56","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-87994"},"modified":"2026-09-10T08:31:56","modified_gmt":"2026-09-10T00:31:56","slug":"cve-2026-87994","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-87994","title":{"rendered":"CVE-2026-87994 [MEDIUM] &#8211; Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From"},"content":{"rendered":"<p>Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, the channel branch of chat_completion in backend\/open_webui\/main.py checked channel write access and channel membership for a supplied message_id but did not verify that the calling user authored the targeted message. A channel member could use the chat completions endpoint to replace another member&#8217;s message while preserving the victim as the stored author, altering the conversation record without gaining access to other channels. This issue is fixed in version 0.11.1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, the channel branch of chat_completion in backend\/open_webui\/main.py checked channel write<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-20471","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/20471","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=20471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}