Vulnerability-Lookup

BDU:2026-09558

Vulnerability from fstec - Published: 24.03.2026

Title

Уязвимость класса DefaultHttp2FrameReader фреймворка для разработки сетевых приложений, серверов и клиентов протоколов Netty, позволяющая нарушителю вызвать отказ в обслуживании

Description

Уязвимость класса DefaultHttp2FrameReader фреймворка для разработки сетевых приложений, серверов и клиентов протоколов Netty связана с распределением ресурсов без ограничений и регулирования. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании

Severity


                    
                      AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor

ООО «Ред Софт», АО «ИВК», Сообщество свободного программного обеспечения

Software Name

РЕД ОС (запись в едином реестре российских программ №3751), АЛЬТ СП 10, Netty

Software Version

7.3 (РЕД ОС), - (АЛЬТ СП 10), 8.0 (РЕД ОС), до 4.1.132.Final (Netty), от 4.2.0 до 4.2.10.Final (Netty)

Possible Mitigations

Использование рекомендаций: Для Netty: https://github.com/netty/netty/commit/9f47a7b6846e6c7cb0481789be51788944042b85 https://github.com/netty/netty/releases?page=2#release-netty-4.1.132.Final Для РедОС: https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2026-33871 Для ОС АЛЬТ СП 10: установка обновления из публичного репозитория программного средства: https://altsp.su/obnovleniya-bezopasnosti/

Reference

https://github.com/netty/netty/security/advisories/GHSA-w9fj-cfpg-grvv https://altsp.su/obnovleniya-bezopasnosti/

CWE

CWE-770

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "\u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb, \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "7.3 (\u0420\u0415\u0414 \u041e\u0421), - (\u0410\u041b\u042c\u0422 \u0421\u041f 10), 8.0 (\u0420\u0415\u0414 \u041e\u0421), \u0434\u043e 4.1.132.Final (Netty), \u043e\u0442 4.2.0 \u0434\u043e 4.2.10.Final (Netty)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Netty:\nhttps://github.com/netty/netty/commit/9f47a7b6846e6c7cb0481789be51788944042b85\nhttps://github.com/netty/netty/releases?page=2#release-netty-4.1.132.Final\n\n\u0414\u043b\u044f \u0420\u0435\u0434\u041e\u0421:\nhttps://redos.red-soft.ru/search/?iblock_id=24\u0026q=CVE-2026-33871\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u041b\u042c\u0422 \u0421\u041f 10: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u0433\u043e \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430: https://altsp.su/obnovleniya-bezopasnosti/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "24.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "16.07.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "10.07.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-09558",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-33871",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "\u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u0410\u041b\u042c\u0422 \u0421\u041f 10, Netty",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "\u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u041b\u042c\u0422 \u0421\u041f 10 - , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 8.0  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043b\u0430\u0441\u0441\u0430 DefaultHttp2FrameReader \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 \u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 Netty, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u043e\u0435 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0438\u043b\u0438 \u0434\u0440\u043e\u0441\u0441\u0435\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 (CWE-770)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043b\u0430\u0441\u0441\u0430 DefaultHttp2FrameReader \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 \u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 Netty \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435\u043c \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0431\u0435\u0437 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439 \u0438 \u0440\u0435\u0433\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0418\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://github.com/netty/netty/security/advisories/GHSA-w9fj-cfpg-grvv\nhttps://altsp.su/obnovleniya-bezopasnosti/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-770",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,5)"
}

CVE-2026-33871 (GCVE-0-2026-33871)

Vulnerability from cvelistv5 – Published: 2026-03-27 19:55 – Updated: 2026-09-15 12:04

Title

Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass

Summary

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-31 18:51 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M mitre root

References

21 references

URL	Tags
https://github.com/netty/netty/security/advisorie…	x_refsource_CONFIRM
https://access.redhat.com/security/cve/CVE-2026-33871	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2452456	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:18054	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17789	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:18055	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:14276	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:14272	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8509	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8159	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22619	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:18059	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:10184	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65126	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:10175	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17668	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7109	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7380	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34608	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13571	vendor-advisoryx_refsource_REDHAT

Impacted products

44 products

Vendor	Product	Version
netty	netty	Affected: < 4.1.132.Final Affected: >= 4.2.0.Alpha1, < 4.2.10.Final
Red Hat	Cryostat 4 on RHEL 9	Unaffected: 4.2.0-9 , < * (rpm) cpe:/a:redhat:cryostat:4::el9
Red Hat	Red Hat AMQ Broker 7.12.7	Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:amq_broker:7.12
Red Hat	Red Hat AMQ Broker 7.13.5	Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:amq_broker:7.13
Red Hat	Red Hat AMQ Broker 7.14.0	Unaffected: codec-http , < * (rpm) Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:amq_broker:7.14
Red Hat	Red Hat Build of Apache Camel 4.14 for Quarkus 3.27	Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:apache_camel_quarkus:3.27
Red Hat	Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14	Unaffected: codec-http , < * (rpm) Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:apache_camel_spring_boot:4.18
Red Hat	Red Hat build of Quarkus 3.20.6	Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:quarkus:3.20::el8
Red Hat	Red Hat build of Quarkus 3.27.3	Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:quarkus:3.27::el8
Red Hat	Red Hat Data Grid 8.6.1	Unaffected: codec-http , < * (rpm) Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:jboss_data_grid:8
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1	Unaffected: codec-http , < * (rpm) cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1	Unaffected: http-4.1.100.Final.jar , < * (rpm) cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8	Unaffected: 0:4.1.132-1.Final_redhat_00001.1.el8eap , < * (rpm) cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9	Unaffected: 0:4.1.132-1.Final_redhat_00001.1.el9eap , < * (rpm) cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9
Red Hat	Streams for Apache Kafka 2.9.4	Unaffected: codec-http , < * (rpm) Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:amq_streams:2.9::el9
Red Hat	Streams for Apache Kafka 3.2.0	cpe:/a:redhat:amq_streams:3.2::el9
Red Hat	Red Hat OpenShift AI 2.25	Unaffected: 1776756834 , < * (rpm) cpe:/a:redhat:openshift_ai:2.25::el9
Red Hat	Red Hat OpenShift AI 2.25	Unaffected: 1788198681 , < * (rpm) cpe:/a:redhat:openshift_ai:2.25::el9
Red Hat	Red Hat OpenShift Dev Spaces 3.27	Unaffected: 1776716842 , < * (rpm) cpe:/a:redhat:openshift_devspaces:3.27::el9
Red Hat	Red Hat OpenShift Dev Spaces 3.27	Unaffected: 1776717247 , < * (rpm) cpe:/a:redhat:openshift_devspaces:3.27::el9
Red Hat	Red Hat OpenShift Dev Spaces 3.27	Unaffected: 1776796445 , < * (rpm) cpe:/a:redhat:openshift_devspaces:3.27::el9
Red Hat	Cryostat 4	cpe:/a:redhat:cryostat:4
Red Hat	Logging Subsystem for Red Hat OpenShift	cpe:/a:redhat:logging:5
Red Hat	OpenShift Serverless	cpe:/a:redhat:serverless:1
Red Hat	Red Hat AMQ Clients	cpe:/a:redhat:amq_clients:2023
Red Hat	Red Hat build of Apache Camel 4 for Quarkus 3	cpe:/a:redhat:camel_quarkus:3
Red Hat	Red Hat build of Apache Camel - HawtIO 4	cpe:/a:redhat:apache_camel_hawtio:4
Red Hat	Red Hat build of Apicurio Registry 2	cpe:/a:redhat:service_registry:2
Red Hat	Red Hat build of Apicurio Registry 3	cpe:/a:redhat:apicurio_registry:3
Red Hat	Red Hat build of Debezium 2	cpe:/a:redhat:debezium:2
Red Hat	Red Hat build of Debezium 3	cpe:/a:redhat:debezium:3
Red Hat	Red Hat Build of Keycloak	cpe:/a:redhat:build_keycloak:
Red Hat	Red Hat build of OptaPlanner 8	cpe:/a:redhat:optaplanner:::el6
Red Hat	Red Hat build of Quarkus	cpe:/a:redhat:quarkus:3
Red Hat	Red Hat Enterprise Linux AI (RHEL AI) 3	cpe:/a:redhat:enterprise_linux_ai:3
Red Hat	Red Hat Fuse 7	cpe:/a:redhat:jboss_fuse:7
Red Hat	Red Hat JBoss Enterprise Application Platform 7	cpe:/a:redhat:jboss_enterprise_application_platform:7
Red Hat	Red Hat JBoss Enterprise Application Platform 8	cpe:/a:redhat:jboss_enterprise_application_platform:8
Red Hat	Red Hat JBoss Enterprise Application Platform Expansion Pack	cpe:/a:redhat:jbosseapxp
Red Hat	Red Hat OpenShift AI (RHOAI)	cpe:/a:redhat:openshift_ai
Red Hat	Red Hat Process Automation 7	cpe:/a:redhat:jboss_enterprise_bpms_platform:7
Red Hat	Red Hat Satellite 6	cpe:/a:redhat:satellite:6
Red Hat	Red Hat Single Sign-On 7	cpe:/a:redhat:red_hat_single_sign_on:7
Red Hat	streams for Apache Kafka 3	cpe:/a:redhat:amq_streams:3

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                "id": "CVE-2026-33871",
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                  },
                  {
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T18:51:31.168118Z",
                "version": "2.0.3"
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            "packageName": "netty",
            "product": "Red Hat Build of Apache Camel 4.14 for Quarkus 3.27",
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            "packageName": "netty",
            "product": "Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14",
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            "product": "Red Hat build of Quarkus 3.20.6",
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            "product": "Red Hat build of Quarkus 3.27.3",
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            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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            "product": "Red Hat Data Grid 8.6.1",
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            "product": "Red Hat JBoss Enterprise Application Platform 8.1",
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            "product": "Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8",
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            "product": "Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9",
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            "product": "Streams for Apache Kafka 2.9.4",
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            "packageName": "rhoai/odh-modelmesh-rhel9",
            "product": "Red Hat OpenShift AI 2.25",
            "vendor": "Red Hat",
            "versions": [
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                "lessThan": "*",
                "status": "unaffected",
                "version": "1776756834",
                "versionType": "rpm"
              }
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          {
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            "cpes": [
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            "defaultStatus": "affected",
            "packageName": "rhoai/odh-trustyai-service-rhel9",
            "product": "Red Hat OpenShift AI 2.25",
            "vendor": "Red Hat",
            "versions": [
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                "lessThan": "*",
                "status": "unaffected",
                "version": "1788198681",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
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            ],
            "defaultStatus": "affected",
            "packageName": "devspaces/openvsx-rhel9",
            "product": "Red Hat OpenShift Dev Spaces 3.27",
            "vendor": "Red Hat",
            "versions": [
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                "lessThan": "*",
                "status": "unaffected",
                "version": "1776716842",
                "versionType": "rpm"
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            "packageName": "devspaces/pluginregistry-rhel9",
            "product": "Red Hat OpenShift Dev Spaces 3.27",
            "vendor": "Red Hat",
            "versions": [
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                "lessThan": "*",
                "status": "unaffected",
                "version": "1776717247",
                "versionType": "rpm"
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            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
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            ],
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            "packageName": "devspaces/server-rhel9",
            "product": "Red Hat OpenShift Dev Spaces 3.27",
            "vendor": "Red Hat",
            "versions": [
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                "lessThan": "*",
                "status": "unaffected",
                "version": "1776796445",
                "versionType": "rpm"
              }
            ]
          },
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            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:cryostat:4"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Cryostat 4",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:logging:5"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift-logging/elasticsearch6-rhel9",
            "product": "Logging Subsystem for Red Hat OpenShift",
            "vendor": "Red Hat"
          },
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            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:logging:5"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift-logging/elasticsearch-operator-bundle",
            "product": "Logging Subsystem for Red Hat OpenShift",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:logging:5"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift-logging/elasticsearch-proxy-rhel9",
            "product": "Logging Subsystem for Red Hat OpenShift",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:logging:5"
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              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:22619"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:18059"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:10184"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:65126"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:10175"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:17668"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:7109"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:7380"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:34608"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:13571"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:18054: Red Hat JBoss EAP 8.1 for RHEL 8"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:17789: Cryostat 4 on RHEL 9"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:18055: Red Hat JBoss EAP 8.1 for RHEL 9"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:14276: Red Hat AMQ Broker 7.12.7"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:14272: Red Hat AMQ Broker 7.13.5"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:8509: Red Hat AMQ Broker 7.14.0"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:8159: Red Hat Build of Apache Camel 4.14 for Quarkus 3.27"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:22619: Red Hat Data Grid 8.6.1"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:18059: Red Hat JBoss Enterprise Application Platform 8.1.7.GA"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:10184: Red Hat OpenShift AI 2.25"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:65126: Red Hat OpenShift AI 2.25"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:10175: Red Hat OpenShift Dev Spaces 3.27"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:17668: Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:7109: Red Hat build of Quarkus 3.20.6"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:7380: Red Hat build of Quarkus 3.27.3"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:34608: Streams for Apache Kafka 2.9.4"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:13571: Streams for Apache Kafka 3.2.0"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-03-27T21:02:13.396Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-03-27T19:55:23.135Z",
            "value": "Made public."
          }
        ],
        "title": "netty: Netty: Denial of Service via HTTP/2 CONTINUATION frame flood",
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "netty",
          "vendor": "netty",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.1.132.Final"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.2.0.Alpha1, \u003c 4.2.10.Final"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server\u0027s lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-27T19:55:23.135Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/netty/netty/security/advisories/GHSA-w9fj-cfpg-grvv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/netty/netty/security/advisories/GHSA-w9fj-cfpg-grvv"
        }
      ],
      "source": {
        "advisory": "GHSA-w9fj-cfpg-grvv",
        "discovery": "UNKNOWN"
      },
      "title": "Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33871",
    "datePublished": "2026-03-27T19:55:23.135Z",
    "dateReserved": "2026-03-24T15:10:05.679Z",
    "dateUpdated": "2026-09-15T12:04:27.844Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.