{"id":30060,"date":"2026-09-28T08:31:49","date_gmt":"2026-09-28T00:31:49","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-101090"},"modified":"2026-09-28T08:31:49","modified_gmt":"2026-09-28T00:31:49","slug":"cve-2026-101090","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-101090","title":{"rendered":"CVE-2026-101090 [CRITICAL] &#8211; Nezha 2.2.3 contains a Host header injection regression in the OAuth2 redirect endpoint. W"},"content":{"rendered":"<p>Nezha 2.2.3 contains a Host header injection regression in the OAuth2 redirect endpoint. When the new optional dashboard_host setting is empty, \/api\/v1\/oauth2\/{provider} (cmd\/dashboard\/controller\/oauth2.go) reflects the attacker-supplied HTTP Host header into the redirect_uri sent to the identity provider instead of falling back to the configured install_host. An attacker who induces a victim to begin OAuth2 login via a request that reaches Nezha with a forged Host header can cause an attacker-controlled callback URL to be used as the redirect_uri; if the OAuth2 provider accepts it, the victim&#8217;s authorization code is delivered to the attacker origin, allowing the attacker to complete the OAuth2 login\/binding flow and take over the account. This regresses the fix for GHSA-9rc6-8cjv-rcvx and is configuration-dependent (dashboard_host empty). At the time of the advisory no patched version was available.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nezha 2.2.3 contains a Host header injection regression in the OAuth2 redirect endpoint. When the new optional dashboard_host setting is empty, \/api\/v1\/oauth2\/{provider} (cmd\/dashboard\/controller\/oaut<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-30060","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/30060","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=30060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}