{"id":23232,"date":"2026-09-16T04:31:18","date_gmt":"2026-09-15T20:31:18","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-55149"},"modified":"2026-09-16T04:31:18","modified_gmt":"2026-09-15T20:31:18","slug":"cve-2026-55149","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-55149","title":{"rendered":"CVE-2026-55149 [HIGH] &#8211; Vouch Proxy is an SSO and OAuth\/OIDC login solution for Nginx using the auth_request modul"},"content":{"rendered":"<p>Vouch Proxy is an SSO and OAuth\/OIDC login solution for Nginx using the auth_request module. Prior to 0.48.0, Cookie in pkg\/cookie\/cookie.go parses the total part count from an attacker-controlled multipart cookie name and passes the value to make([]string, numParts) without checking that the value is positive or reasonably bounded. Requests to \/validate and \/_external-auth-:id reach JWTCacheHandler in pkg\/jwtmanager\/jwtcache.go, FindJWT in pkg\/jwtmanager\/jwtmanager.go, and the vulnerable cookie reassembly before JWT validation, so no account or valid session is required. A cookie name such as VouchCookie_1of10000000000 causes an attempted slice allocation of roughly 160 GB and a fatal Go runtime out-of-memory condition, allowing one request to crash the authentication proxy and repeated requests to sustain unavailability. This vulnerability is fixed in 0.48.0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vouch Proxy is an SSO and OAuth\/OIDC login solution for Nginx using the auth_request module. Prior to 0.48.0, Cookie in pkg\/cookie\/cookie.go parses the total part count from an attacker-controlled mul<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-23232","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/23232","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=23232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=23232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=23232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}