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Undertow-core: undertow: denial of service via websocket permessage-deflate processing (Red Hat Red Hat JBoss Enterprise Application Platform 8.1.8.GA)

CVE-2026-5680
HIGH 7.5

At a glance

Source
NVD
EPSS
EPSS 1.10 % · percentile 66 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Awaiting Analysis

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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.

Weaknesses (CWE)

  • CWE-770 — Allocation of Resources Without Limits or Throttling

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · secalert@redhat.com (Secondary)

European references

Affected products

ProductVersions
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1.8.GAunaffected 2.3.26.SP3-redhat-00001 < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.40.0-8.redhat_00024.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:4.1.7-1.SP1_redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.0.5-1.Final_redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:1.85.0-1.redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:1.2.7-1.redhat_00002.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:801.8.0-1.GA_redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:6.6.54-1.Final_redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:4.1.5-5.redhat_00008.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:3.0.22-1.Final_redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.18.9-1.redhat_00003.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:4.0.5-1.redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:4.0.7-4.redhat_00001.1.el10eap < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10unaffected 0:2.1.0-1.redhat_00001.1.el10eap < *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD