{"id":34253,"date":"2026-10-08T00:35:13","date_gmt":"2026-10-07T16:35:13","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-33586"},"modified":"2026-10-08T00:35:13","modified_gmt":"2026-10-07T16:35:13","slug":"cve-2026-33586","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-33586","title":{"rendered":"CVE-2026-33586 &#8211; Authenticated users are able to manipulate both the SMTP\nenvelope \u201cEnvelope-from\u201d and \u201cFro"},"content":{"rendered":"<p>Authenticated users are able to manipulate both the SMTP<br \/>\nenvelope \u201cEnvelope-from\u201d and \u201cFrom\u201d fields when sending<br \/>\nemails through OVH mail servers.<\/p>\n<p>Due to OVH&#8217;s default SPF configuration, which<br \/>\ncommonly includes include:mx.ovh.com, any authenticated user with a<br \/>\nvalid OVH email account can send messages that appear to originate from any<br \/>\nOVH-hosted domains using the default SPF record. Since the SPF policy<br \/>\nexplicitly authorizes OVH mail servers (mx.ovh.com) to send mail on behalf of<br \/>\nthese domains, forged messages successfully pass SPF validation despite<br \/>\nnot being authorized by the impersonated domain owner.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Authenticated users are able to manipulate both the SMTP<br \/>\nenvelope \u201cEnvelope-from\u201d and \u201cFrom\u201d fields when sending<br \/>\nemails through OVH mail servers.<\/p>\n<p>Due to OVH&#8217;s default SPF configuration, which<br \/>\ncommo<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-34253","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/34253","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=34253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=34253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=34253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}