CVE-2026-5680
High
Description
A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer() method using exponential doubling, resulting in a Denial of Service (DoS) for the affected application.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Jboss Enterprise Application Platform 8.1
PublishedAug 27, 2026
First seenAug 27, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| jboss_enterprise_application_platform 8.1 | No range specified | — |
| Red Hat Red Hat build of Apache Camel for Spring Boot 4 | No range specified | — |
| Red Hat Red Hat Data Grid 8 | No range specified | — |
| Red Hat Red Hat JBoss Enterprise Application Platform 7 | No range specified | — |
| Red Hat Red Hat JBoss Enterprise Application Platform 8 | No range specified | — |
| Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack | No range specified | — |
| Red Hat Red Hat Process Automation 7 | No range specified | — |
| Red Hat Red Hat Single Sign-On 7 | No range specified | — |
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