Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81624— Undertow-core: undertow: websocketcontainer defaults for buffers and timeouts are infinite

Quick assessment

Affected
Red Hat Red Hat build of Apache Camel for Spring Boot 4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Undertow 是 JBoss EAP 和 WildFly 中使用的灵活、高性能 Web 服务器。在 Undertow 处理 WebSocket 连接时存在一个缺陷：某些配置限制（如消息缓冲区大小和会话超时时间）无法进行配置，默认设置为无限制。这使得远程攻击者能够发送大量数据或无限期保持连接，从而通过耗尽服务器内存或其他资源，导致服务器崩溃。

CVSS 7.5 · High
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81624

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Undertow-core: undertow: websocketcontainer defaults for buffers and timeouts are infinite
Source: CVE Program / CVE List V5
Vulnerability Description
Undertow is a flexible performant web server used in JBoss EAP and WildFly. A flaw was found in how Undertow handles WebSocket connections. Specifically, certain configuration limits like message buffer sizes and session timeouts cannot be adjusted and default to being unlimited. This allows a remote attacker to send large amounts of data or maintain connections indefinitely, potentially crashing the server by exhausting its memory or other resources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Apache Camel for Spring Boot 4 - cpe:/a:redhat:camel_spring_boot:4
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
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 7 - cpe:/a:redhat:jboss_enterprise_application_platform: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 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 Single Sign-On 7 - cpe:/a:redhat:red_hat_single_sign_on:7

II. Public POCs for CVE-2026-81624

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81624

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-81624 (1)

Other References for CVE-2026-81624 (1)

IV. Related Vulnerabilities

Same product: Red Hat build of Apache Camel for Spring Boot 4
Same vendor: Red Hat
Same weakness: CWE-770

V. Comments for CVE-2026-81624

No comments yet

Leave a comment