CVE-2026-86350
Fixed in a distro release EPSS <1%CVSS 9.1
Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up. This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Products: Apache Software Foundation Apache Tomcat
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian:12 | tomcat10 | no fix |
| Debian:12 | tomcat9 | 9.0.70-2 |
| Debian:13 | tomcat10 | no fix |
| Debian:13 | tomcat11 | no fix |
| Debian:13 | tomcat9 | 9.0.70-2 |
| Debian:14 | tomcat10 | 10.1.60-1 |
| Debian:14 | tomcat11 | no fix |
| Debian:14 | tomcat9 | 9.0.70-2 |
| Red Hat:hummingbird:1 | tomcat10 | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-admin-webapps | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-common | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-docs-webapp | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-el-5.0-api | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-jsp-3.1-api | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-lib | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-servlet-6.0-api | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-user-instance | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat10-webapps | 0:10.1.60-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11 | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-admin-webapps | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-common | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-docs-webapp | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-el-6.0-api | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-jsp-4.0-api | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-lib | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-servlet-6.1-api | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-user-instance | 0:11.0.26-0.1.hum1 |
| Red Hat:hummingbird:1 | tomcat11-webapps | 0:11.0.26-0.1.hum1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | libtcnative-1-0 | 1.3.9-150600.16.9.2 |
| SUSE:Linux Enterprise Module for Web and Scripting 15 SP7 | libtcnative-1-0 | 1.3.9-150600.16.9.2 |
| SUSE:Linux Enterprise Module for Web and Scripting 15 SP7 | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Module for Web and Scripting 15 SP7 | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise Module for Web and Scripting 15 SP7 | tomcat11 | 11.0.26-150600.13.36.2 |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | libtcnative-1-0 | 1.3.9-150600.16.9.2 |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | tomcat11 | 11.0.26-150600.13.36.2 |
| SUSE:Linux Enterprise Server 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | tomcat | 9.0.122-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | tomcat10 | 10.1.60-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | tomcat11 | 11.0.26-160000.1.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | libtcnative-1-0 | 1.3.9-150600.16.9.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | tomcat | 9.0.122-150200.123.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | tomcat10 | 10.1.60-150200.5.82.2 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | tomcat11 | 11.0.26-150600.13.36.2 |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | tomcat | 9.0.122-160000.1.1 |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | tomcat10 | 10.1.60-160000.1.1 |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | tomcat11 | 11.0.26-160000.1.1 |
| Ubuntu:24.04:LTS | tomcat10 | no fix |
| Ubuntu:24.04:LTS | tomcat9 | no fix |
| Ubuntu:26.04:LTS | tomcat10 | no fix |
| Ubuntu:26.04:LTS | tomcat11 | no fix |
| Ubuntu:26.04:LTS | tomcat9 | no fix |
| Ubuntu:26.10 | tomcat10 | no fix |
| Ubuntu:26.10 | tomcat11 | no fix |
| Ubuntu:26.10 | tomcat9 | no fix |
| Ubuntu:Pro:14.04:LTS | tomcat6 | no fix |
| Ubuntu:Pro:14.04:LTS | tomcat7 | no fix |
| Ubuntu:Pro:16.04:LTS | tomcat7 | no fix |
| Ubuntu:Pro:16.04:LTS | tomcat8 | no fix |
| Ubuntu:Pro:18.04:LTS | tomcat8 | no fix |
| Ubuntu:Pro:18.04:LTS | tomcat9 | no fix |
| Ubuntu:Pro:20.04:LTS | tomcat9 | no fix |
| Ubuntu:Pro:22.04:LTS | tomcat9 | no fix |
| openSUSE:Leap 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 |
| openSUSE:Leap 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 |
| openSUSE:Leap 16.0 | tomcat | 9.0.122-160000.1.1 |
| openSUSE:Leap 16.0 | tomcat10 | 10.1.60-160000.1.1 |
| openSUSE:Leap 16.0 | tomcat11 | 11.0.26-160000.1.1 |
| openSUSE:Tumbleweed | tomcat | 9.0.122-1.1 |
| openSUSE:Tumbleweed | tomcat10 | 10.1.60-1.1 |
| openSUSE:Tumbleweed | tomcat11 | 11.0.26-1.1 |