tomcat9: Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous serv...
CVE-2026-101356 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-101356, released October 21, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| tomcat · sles 15.6 | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 | Nov 7, 2026 |
| tomcat · sles 15.7 | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 | Nov 7, 2026 |
| tomcat10 · sles 15.6 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 | Nov 7, 2026 |
| tomcat10 · sles 15.7 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 | Nov 7, 2026 |
| tomcat9 · Debian 12.15 (bookworm) | 9.0.70-2 | DEBIAN-CVE-2026-101356 | Oct 21, 2026 |
| tomcat9 · Debian 13.5 (trixie) | 9.0.70-2 | DEBIAN-CVE-2026-101356 | Oct 21, 2026 |
| tomcat9 · Debian 14 | 9.0.70-2 | DEBIAN-CVE-2026-101356 | Oct 21, 2026 |
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