{"id":27173,"date":"2026-09-22T00:31:03","date_gmt":"2026-09-21T16:31:03","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-61629"},"modified":"2026-09-22T00:31:03","modified_gmt":"2026-09-21T16:31:03","slug":"cve-2026-61629","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-61629","title":{"rendered":"CVE-2026-61629 [HIGH] &#8211; nginx ignition is a user interface for the nginx web server. In versions 2.29.0 through 2."},"content":{"rendered":"<p>nginx ignition is a user interface for the nginx web server. In versions 2.29.0 through 2.40.0, the gin i18n middleware in nginx-ignition&#8217;s API server runs in front of every HTTP request and calls `golang.org\/x\/text\/language.ParseAcceptLanguage` on the raw `Accept-Language` header without imposing any size or shape filter. The underlying parser has quadratic-time behaviour on long lists of malformed language tags. The CVE-2022-32149 guard that golang.org\/x\/text added in v0.3.8 caps the number of `-` characters in the input at 1000, but it does not cap `_` characters even though the parser&#8217;s internal scanner aliases `_` to `-` before parsing. A single unauthenticated GET request with an `Accept-Language` header built out of `_` separators burns about 2.4 seconds of server CPU on the host running nginx-ignition; ten concurrent attackers saturate a ten-core box for the duration of the attack while consuming ~10 MiB\/s of upstream bandwidth. Version 2.40.1 fixes this issue.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>nginx ignition is a user interface for the nginx web server. In versions 2.29.0 through 2.40.0, the gin i18n middleware in nginx-ignition&#8217;s API server runs in front of every HTTP request and calls `go<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-27173","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/27173","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=27173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}