High [CVE-2026-76183] Authentication Bypass in WebSocket Endpoints
This high-severity Red Hat Linux advisory covers CVE-2026-76183; related products: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7.
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Summary
Authentication Bypass in WebSocket Endpoints. Red Hat rates this important (CVSS 7.4).
Weakness: CWE-289. Red Hat lists fixing advisory RHSA-2026:68257 with package tomcat11-main-11.0.26-0.1.hum1, tomcat10-main-10.1.60-0.1.hum1.
Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 6 more.
Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat JBoss Web Server 5; Red Hat JBoss Web Server 6; Red Hat JBoss Web Server 7; and 2 more.
- 11.0.0
- 11.0.25
- 10.1.0
- 10.1.59
- 9.0.0
- 9.0.121
- 8.5.0
- 8.5.100
- 7.0.43
- 7.0.109
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
- tomcat11-main-11.0.26-0.1.hum1
- tomcat10-main-10.1.60-0.1.hum1
- RHSA-2026:68257
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
Mitigation checklist
- Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when/if they become available.
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
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