CVE-2026-5680
Last modified
CVE-2026-5680 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | All versions |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | All versions |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | All versions |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | All versions |
| Red Hat | Red Hat Data Grid 8 | All versions |
| Red Hat | Red Hat Enterprise Linux 9 | All versions |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | All versions |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | All versions |
| Red Hat | Red Hat Process Automation 7 | All versions |
| Red Hat | Red Hat Single Sign-On 7 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
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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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Scan your code nowSource: NVD / NIST