{"id":17445,"date":"2026-09-05T02:31:07","date_gmt":"2026-09-04T18:31:07","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-18540"},"modified":"2026-09-05T02:31:07","modified_gmt":"2026-09-04T18:31:07","slug":"cve-2026-18540","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-18540","title":{"rendered":"CVE-2026-18540 [LOW] &#8211; undici&#8217;s retry interceptor can append the body of a ranged retry response to bytes already"},"content":{"rendered":"<p>undici&#8217;s retry interceptor can append the body of a ranged retry response to bytes already delivered from an earlier partial response while still presenting the original response&#8217;s status and headers. This happens when an upstream server delivers part of a body without a trustworthy resume checkpoint, for example a non-success response whose headers were already sent or a partial-content response with an unusable content range, then closes the connection and answers the resumed range request with more bytes. As a result the response body can be longer than the Content-Length that the application observes. An application that relays such a response to a downstream HTTP\/1.1 peer without normalizing the framing can emit a body that exceeds the forwarded Content-Length, and the excess bytes can be interpreted as the start of a following response, which enables downstream response splitting or desynchronization. Exploitation requires an attacker-controlled upstream server and an application that forwards the response through a framing-sensitive path. This affects undici versions before 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>undici&#8217;s retry interceptor can append the body of a ranged retry response to bytes already delivered from an earlier partial response while still presenting the original response&#8217;s status and headers.<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17445","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17445","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=17445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}