CVE-2026-5680

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.
Configurations

No configuration.

History

22 Sep 2026, 16:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:70228 -
  • () https://access.redhat.com/errata/RHSA-2026:70229 -
  • () https://access.redhat.com/errata/RHSA-2026:70230 -
  • () https://access.redhat.com/errata/RHSA-2026:70277 -

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