CVE-2026-5680
CVE-2026-5680: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-5680] Undertow-core: undertow: denial of service via websocket permessage-deflate processing
CVE-2026-5680Source published Source updated
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. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770. Affected Red Hat products: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Data Grid 8; Red Hat Enterprise Linux 9; Red Hat…
- Affected products in this advisory
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Red Hat build of Apache Camel for Spring Boot 4
7 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- eap8-activemq-artemis-0:2.40.0-8.redhat_00024.1.el10eap
- eap8-apache-cxf-0:4.1.7-1.SP1_redhat_00001.1.el10eap
- eap8-artemis-wildfly-integration-0:2.0.5-1.Final_redhat_00001.1.el10eap
- eap8-bouncycastle-0:1.85.0-1.redhat_00001.1.el10eap
39 more entries in the full advisory.
- Mitigation guidance
- To mitigate this issue, configure the PerMessageDeflateHandshake to limit the maximum decompressed buffer size. This can be achieved by setting the maxDecompressedBufferSize parameter to a reasonable value (e.g., 10 MB) in the PerMessageDeflateHandshake constructor. This action may require a restart of the affected application or service to take effect.
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