{"id":28121,"date":"2026-09-24T04:31:44","date_gmt":"2026-09-23T20:31:44","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77394"},"modified":"2026-09-24T04:31:44","modified_gmt":"2026-09-23T20:31:44","slug":"cve-2026-77394","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77394","title":{"rendered":"CVE-2026-77394 [HIGH] &#8211; OpenC3 COSMOS provides the functionality needed to send commands to and receive data from"},"content":{"rendered":"<p>OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.0.6 until 7.3.0, an authenticated actor with system_set permission can store a shared screen through POST \/openc3-api\/screen whose BUTTON widget action is evaluated by openc3-cosmos-init\/plugins\/packages\/openc3-vue-common\/src\/widgets\/ButtonWidget.vue in another operator&#8217;s browser session when the button is activated. The stored script runs in the COSMOS origin and can read localStorage.openc3Token, allowing theft of the victim&#8217;s bearer token, account takeover, and actions with the victim&#8217;s privileges. The permissive content security policy contributes to execution but is not the primary root cause. This issue is fixed in version 7.3.0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.0.6 until 7.3.0, an authenticated actor with system_set permission can st<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28121","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28121","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=28121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}