{"id":27445,"date":"2026-09-22T20:30:53","date_gmt":"2026-09-22T12:30:53","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-87119"},"modified":"2026-09-22T20:30:53","modified_gmt":"2026-09-22T12:30:53","slug":"cve-2026-87119","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-87119","title":{"rendered":"CVE-2026-87119 &#8211; Authentication Bypass by Capture-replay in ZenHive mpp allows an attacker holding a captur"},"content":{"rendered":"<p>Authentication Bypass by Capture-replay in ZenHive mpp allows an attacker holding a captured subscription activation credential to charge the payer repeatedly.<\/p>\n<p>The payer signs a Tempo KeyAuthorization over the chain id, key type, key id, expiry, limits and scopes only, with nothing tying it to the challenge that prompted it. MPP.Methods.Tempo.KeyAuthorization.verify\/3 in lib\/mpp\/methods\/tempo\/key_authorization.ex pins each of those signed fields against the subscription request, and the access key it pins is a static per-endpoint server key, so one signed authorization verifies against every challenge the server issues for the same subscription terms. MPP.Methods.Tempo.Subscription.activate\/4 deduplicates activations by challenge id, so presenting the captured credential under a fresh challenge produces a different dedup key, claim_activation succeeds, and the subscription transaction is built and broadcast again. Each replay charges the payer&#8217;s wallet a new first-period settlement and re-authorizes the server key, bounded only by the subscription expiry and the chain&#8217;s own semantics for re-installing an existing key.<\/p>\n<p>This issue affects mpp: from 0.14.0 before 0.16.2.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Authentication Bypass by Capture-replay in ZenHive mpp allows an attacker holding a captured subscription activation credential to charge the payer repeatedly.<\/p>\n<p>The payer signs a Tempo KeyAuthorizatio<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-27445","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/27445","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=27445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}