CVE-2026-15565Undertow: undertow-websockets: undertow: pre-auth dos on websocket endpoint with @serverendpoint class with any @onmessage method
- 7.5HighCVSS base score
- 1.0%Exploitation in 30 daysEPSS · top 36% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket handshake.
Timeline
ID reserved
By redhat
- 29 days later
· 29 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.0% · top 36% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4.25
All versions: unaffected
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.16.0-22.redhat_00057.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.3.14-11.SP11_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:1.5.26-2.Final_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.18.8-1.redhat_00003.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.18.8-1.redhat_00003.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.18.8-1.redhat_00003.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.18.8-1.redhat_00003.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.18.8-1.redhat_00003.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.18.8-1.redhat_00003.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:5.0.31-3.SP2_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:1.10.0-46.Final_redhat_00044.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:4.1.135-1.Final_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:4.1.135-1.Final_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.5.5-30.SP12_redhat_00020.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.5.5-24.SP12_redhat_00016.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:2.2.40-2.SP3_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- unaffected 0:7.4.25-2.GA_redhat_00001.1.el7eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1.8.GA
- unaffected 2.3.26.SP3-redhat-00001 – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.40.0-8.redhat_00024.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.1.7-1.SP1_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.0.5-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:1.85.0-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:1.2.7-1.redhat_00002.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:801.8.0-1.GA_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:6.6.54-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.1.5-5.redhat_00008.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.0.22-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.18.9-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.0.5-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.0.7-4.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.1.0-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.6.3-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:5.0.31-1.SP2_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.1.0-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.2.0-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:7.4.0-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.0.1-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:5.1.0-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.0.11-2.SP1_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.25.4-1.redhat_00003.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.2.2-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.1.136-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:4.1.136-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:9.37.4-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:1.1.9-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.0.6-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.0.18-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.3.26-2.SP3_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:8.1.8-9.GA_redhat_00006.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.6.11-1.Final_redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:8.1.1-12.GA_redhat_00048.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:2.3.2-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
- unaffected 0:3.0.6-1.redhat_00001.1.el10eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.40.0-8.redhat_00024.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.1.7-1.SP1_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.0.5-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:1.85.0-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:1.2.7-1.redhat_00002.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:801.8.0-1.GA_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:6.6.54-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.1.5-5.redhat_00008.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.0.22-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.18.9-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.0.5-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.0.7-4.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.1.0-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.6.3-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:5.0.31-1.SP2_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.1.0-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.2.0-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:7.4.0-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.0.1-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:5.1.0-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.0.11-2.SP1_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.25.4-1.redhat_00003.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.2.2-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.1.136-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:4.1.136-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:9.37.4-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:1.1.9-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.0.6-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.0.18-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.3.26-2.SP3_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:8.1.8-9.GA_redhat_00006.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.6.11-1.Final_redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:8.1.1-12.GA_redhat_00048.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:2.3.2-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- unaffected 0:3.0.6-1.redhat_00001.1.el8eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.40.0-8.redhat_00024.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.1.7-1.SP1_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.0.5-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:1.85.0-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:1.2.7-1.redhat_00002.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:801.8.0-1.GA_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:6.6.54-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.1.5-5.redhat_00008.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.0.22-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.18.9-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.0.5-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.0.7-4.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.1.0-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.6.3-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:5.0.31-1.SP2_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.1.0-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.2.0-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:7.4.0-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.0.1-1.Final_redhat_00001.1el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:5.1.0-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.0.11-2.SP1_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.25.4-1.redhat_00003.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.2.2-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.1.136-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:4.1.136-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:9.37.4-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:1.1.9-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.0.6-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.0.18-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.3.26-2.SP3_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:8.1.8-9.GA_redhat_00006.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.6.11-1.Final_redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:8.1.1-12.GA_redhat_00048.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:2.3.2-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- unaffected 0:3.0.6-1.redhat_00001.1.el9eap – < *
Red Hat · Red Hat build of Apache Camel for Spring Boot 4
All versions: affected
All versions: affected
All versions: unknown
Red Hat · Red Hat JBoss Enterprise Application Platform 7
All versions: affected
Red Hat · Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions: unaffected
Red Hat · Red Hat Single Sign-On 7
All versions: unknown
What to do
Workaround: Option 1 — Server-wide configuration to disable websockets handshake: <!-- Remove <websockets/> from standalone.xml servlet-container --> <servlet-container name="default"> <jsp-config/> <!-- <websockets/> ← remove this line entirely --> </servlet-container> isWebsocketsEnabled() returns false → no WebSocket upgrade accepted for any deployment. Option 2 — Per-application configuration to disable websockets handshake: <!-- WEB-INF/jboss-web.xml inside the WAR --> <jboss-web> <enable-websockets>false</enable-websockets> </jboss-web> Only that specific WAR's @ServerEndpoint classes are not registered.
References
References8
- RHSA-2026:53644 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:53806 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70228 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70229 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70230 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70277 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-15565 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2490628 (opens in a new tab)issue-trackingx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-55988 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-15565)Record last updated .