CVE-2026-101356
Fixed in a distro release EPSS <1%CVSS 9.1
Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes 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 | no fix |
| Debian:14 | tomcat11 | no fix |
| Debian:14 | tomcat9 | 9.0.70-2 |
| 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:Tumbleweed | tomcat | 9.0.123-1.1 |
| openSUSE:Tumbleweed | tomcat10 | 10.1.61-1.1 |
| openSUSE:Tumbleweed | tomcat11 | 11.0.27-1.1 |