{"id":25340,"date":"2026-09-18T00:32:26","date_gmt":"2026-09-17T16:32:26","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81637"},"modified":"2026-09-18T00:32:26","modified_gmt":"2026-09-17T16:32:26","slug":"cve-2026-81637","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81637","title":{"rendered":"CVE-2026-81637 &#8211; Insufficient Session Expiration vulnerability in team-alembic AshAuthentication allows an"},"content":{"rendered":"<p>Insufficient Session Expiration vulnerability in team-alembic AshAuthentication allows an attacker who obtains a victim&#8217;s OAuth2 state value to replay the callback and sign that victim into an attacker-controlled account.<\/p>\n<p>AshAuthentication.Strategy.OAuth2.Plug.callback\/2 clears the stored session_params through a rebinding step inside its with chain, conn &lt;- delete_session(conn, session_key). Elixir evaluates the else block in the scope enclosing the with, so every failure path (the provider returning ?error=access_denied, an invalid code, a token-exchange error, or a registration or sign-in failure) reaches store_authentication_result\/2 holding the original connection and the session entry is never removed. The value the module&#039;s own comment describes as protection against a CSRF-related attack is therefore consumed only when authentication succeeds, and survives a cancelled or failed attempt until the next request phase or session expiry.<\/p>\n<p>This issue affects ash_authentication: from 0.6.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Insufficient Session Expiration vulnerability in team-alembic AshAuthentication allows an attacker who obtains a victim&#8217;s OAuth2 state value to replay the callback and sign that victim into an attacke<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25340","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25340","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=25340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}