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.
References
Configurations
No configuration.
History
22 Sep 2026, 16:17
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Information
Published : 2026-08-27 17:18
Updated : 2026-10-20 15:17
NVD link : CVE-2026-5680
Mitre link : CVE-2026-5680
CVE.ORG link : CVE-2026-5680
JSON object : View
Products Affected
No product.
CWE
CWE-770
Allocation of Resources Without Limits or Throttling
