{"id":181899,"date":"2026-06-04T14:48:20","date_gmt":"2026-06-04T12:48:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati"},"modified":"2026-06-04T14:48:20","modified_gmt":"2026-06-04T12:48:20","slug":"ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","title":{"rendered":"En attack mot implementeringar av HTTP\/2 som leder till att tillg\u00e4ngligt minne tar slut","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Information has been revealed about the vulnerability \"HTTP\/2 Bomb\", affecting various implementations of the HTTP\/2 protocol and allowing denial of service through the exhaustion of all available process memory. The issue has been confirmed in HTTP servers nginx, Apache httpd (CVE-2026-49975), Microsoft IIS, Envoy (CVE-2026-47774), and Cloudflare Pingora in default configuration.<\/p>\n

The vulnerability uses a method similar to a zip bomb, applied to the header compression functionality in HTTP\/2. The idea is that a request may contain thousands of compressed headers, such as \"Cookie\", without attached data, each represented in the request by a single-byte reference in the HPACK index, but on servern<\/a> The memory consumption level varies between different HTTP servers, from approximately 70 bytes for each byte in the index for nginx, IIS, and Pingora, to 4000 bytes for Apache httpd and 5700 for Envoy. When attacking from a consumer computer with a 100Mbps connection, exhausting 32 GB of memory takes around 10 seconds when targeting Envoy 1.37.2, 18 seconds for Apache httpd 2.4.67, and 45 seconds for nginx 1.29.7. server<\/a> with Envoy 1.37.2, 18 seconds \u2014 Apache httpd 2.4.67 and 45 seconds \u2014 nginx 1.29.7.<\/p>\n

For Microsoft IIS and Cloudflare Pingora, fixes are currently not available.
\nAs a workaround for protection, one can disable the use of the HTTP\/2 protocol and set a limit on the amount of memory available for worker processes.
\nInformation about the \"HTTP\/2 Bomb\" vulnerability has been revealed, affecting various implementations of the HTTP\/2 protocol and allowing for denial of service through the exhaustion of all available memory for the process.
\n\ud83e\udd47Attack on HTTP\/2 implementations leading to available memory exhaustion | ProHoster
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181899","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Attack on HTTP\/2 implementations leading to available memory exhaustion | ProHoster","description":"Information about the \"HTTP\/2 Bomb\" vulnerability has been revealed, affecting various implementations of the HTTP\/2 protocol and allowing for denial of service through the exhaustion of all available memory for the process.","canonical_url":"https:\/\/prohoster.info\/sv\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sv_SE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0410\u0442\u0430\u043a\u0430 \u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 HTTP\/2, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 "HTTP\/2 Bomb", \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0435\u0439 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/2 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043e\u0442\u043a\u0430\u0437\u0430 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0447\u0435\u0440\u0435\u0437 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0432\u0441\u0435\u0439 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0443 \u043f\u0430\u043c\u044f\u0442\u0438.","og:url":"https:\/\/prohoster.info\/sv\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-06-04T12:48:20+00:00","article:modified_time":"2026-06-04T12:48:20+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts\/181899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/comments?post=181899"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts\/181899\/revisions"}],"predecessor-version":[{"id":182084,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts\/181899\/revisions\/182084"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/media?parent=181899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/categories?post=181899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/tags?post=181899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}