CVE-2026-15561
highpriority · track · 0EPSS 0.005 · 39 %ileEUUSEPSS · scored 2026-10-23
A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (11)
Products and version ranges known to be affected.
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:1.10.0-46.Final_redhat_00044.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:1.5.26-2.Final_redhat_00001.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:2.16.0-22.redhat_00057.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:2.18.8-1.redhat_00003.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:2.2.40-2.SP3_redhat_00001.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:2.3.14-11.SP11_redhat_00001.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:2.5.5-24.SP12_redhat_00016.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:2.5.5-30.SP12_redhat_00020.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:4.1.135-1.Final_redhat_00001.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:5.0.31-3.SP2_redhat_00001.1.el7eapenisa_euvdEU
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7< 0:7.4.25-2.GA_redhat_00001.1.el7eapenisa_euvdEU
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (17)
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:53644cnnvd
- https://access.redhat.com/security/cve/CVE-2026-15561cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2483133cnnvd
- https://access.redhat.com/errata/RHSA-2026:53644enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:53806enisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-15561enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2483133enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:53644nvd
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