{"id":30037,"date":"2026-09-28T04:30:51","date_gmt":"2026-09-27T20:30:51","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-101058"},"modified":"2026-09-28T04:30:51","modified_gmt":"2026-09-27T20:30:51","slug":"cve-2026-101058","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-101058","title":{"rendered":"CVE-2026-101058 [MEDIUM] &#8211; python-utcp (pip package utcp-http) before 1.1.12 does not verify whether tool URLs declar"},"content":{"rendered":"<p>python-utcp (pip package utcp-http) before 1.1.12 does not verify whether tool URLs declared in a hand-written UTCP manual point at the agent&#8217;s own loopback interface when that manual is discovered from a remote, non-loopback origin. Because ensure_secure_url intentionally permits loopback HTTP for local development and native manuals bypassed the loopback check performed by the OpenAPI converter, an attacker who can serve a UTCP manual that a victim registers can cause the client to issue requests to services bound only to 127.0.0.1 on the victim host and have the response bodies returned to the caller (server-side request forgery). The http, sse and streamable_http protocols are all affected. Reach is limited to loopback, and exploitation further requires a loopback service that answers unauthenticated requests with useful data. Fixed in utcp-http 1.1.12, which rejects manuals fetched from a non-loopback origin that declare loopback tool URLs, keyed off the final post-redirect discovery URL.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>python-utcp (pip package utcp-http) before 1.1.12 does not verify whether tool URLs declared in a hand-written UTCP manual point at the agent&#8217;s own loopback interface when that manual is discovered fr<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-30037","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/30037","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=30037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}