{"id":22408,"date":"2026-09-15T04:30:49","date_gmt":"2026-09-14T20:30:49","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54567"},"modified":"2026-09-15T04:30:49","modified_gmt":"2026-09-14T20:30:49","slug":"cve-2026-54567","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54567","title":{"rendered":"CVE-2026-54567 [HIGH] &#8211; Flask-Reuploaded provides file uploads for Flask. From 1.5.0 until 1.6.0, UploadSet.save(s"},"content":{"rendered":"<p>Flask-Reuploaded provides file uploads for Flask. From 1.5.0 until 1.6.0, UploadSet.save(storage, name=&#8230;) in src\/flask_uploads\/flask_uploads.py applies lowercase_ext to the default upload path but uses the case-preserving extension helper for a caller-supplied name before extension_allowed evaluates an AllExcept denylist. An attacker who controls the name override can use a mixed-case dangerous extension to bypass a lowercase denylist and store the file in the served upload directory. Exploitation requires a denylist configuration, a user-influenced name override, and a deployment that resolves or executes extensions case-insensitively; pure allowlists remain protected and path containment is not bypassed. On an execution-capable upload directory, the stored file can execute with the web server&#8217;s privileges and affect confidentiality, integrity, and availability. This issue is fixed in version 1.6.0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flask-Reuploaded provides file uploads for Flask. From 1.5.0 until 1.6.0, UploadSet.save(storage, name=&#8230;) in src\/flask_uploads\/flask_uploads.py applies lowercase_ext to the default upload path but u<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-22408","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/22408","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=22408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}