CVE-2026-81624
Last modified
CVE-2026-81624 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Undertow is a flexible performant web server used in JBoss EAP and WildFly. A flaw was found in how Undertow handles WebSocket connections. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | All versions |
| Red Hat | Red Hat Fuse 7 | All versions |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | All versions |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | All versions |
| Red Hat | Red Hat Single Sign-On 7 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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