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

Goal: 1000 CNY · Raised: 1359 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.

Red Hat Undertow是美国Red Hat公司的一款Web服务器软件。 Red Hat Undertow存在资源管理错误漏洞，该漏洞源于处理WebSocket连接时配置限制无法调整且默认为无限，可能导致远程攻击者发送大量数据或无限期维持连接，耗尽内存或其他资源，导致服务器崩溃。

CVSS 7.5 · High EPSS 0.58% · P47

Affected Version Matrix 13

VendorProduct Version RangeStatus
Red Hat Red Hat build of Apache Camel for Spring Boot 4 any affected
Red Hat Red Hat Enterprise Linux 10 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
Red Hat Red Hat Fuse 7 any affected
Red Hat Red Hat JBoss Enterprise Application Platform 7 any affected
any affected
any affected
any affected
Red Hat Red Hat JBoss Enterprise Application Platform 8 any affected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack any unaffected
Red Hat Red Hat Single Sign-On 7 any affected
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Vulnerability Title
Red Hat Undertow 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Undertow是美国Red Hat公司的一款Web服务器软件。 Red Hat Undertow存在资源管理错误漏洞，该漏洞源于处理WebSocket连接时配置限制无法调整且默认为无限，可能导致远程攻击者发送大量数据或无限期维持连接，耗尽内存或其他资源，导致服务器崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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 (2)

Same Patch Batch · Red Hat · 2026-08-31 · 4 CVEs total

CVE-2026-17615 7.5 HIGH Resteasy-core: resteasy sourceprovider remote unauthenticated file read
CVE-2026-76763 7.5 HIGH Io.smallrye/smallrye-graphql: smallrye graphql: unauthenticated denial of service via larg
CVE-2026-13732 7.0 HIGH Gdb: gdb: out-of-bounds write in stabs parser read_member_functions() via crafted elf

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