# CVE-2026-101356: 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.

- Web page: https://patchblox.com/security/cve/CVE-2026-101356
- Priority: Urgent
- CVSS: 9.1 (critical)
- EPSS: 0.0050
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2026

## Description

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

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tomcat sles 15.6 | 9.0.123-150200.126.1 | [SUSE-SU-2026:5116-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5116-1.md) | Nov 7, 2026 |
| Linux | tomcat sles 15.7 | 9.0.123-150200.126.1 | [SUSE-SU-2026:5116-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5116-1.md) | Nov 7, 2026 |
| Linux | tomcat10 sles 15.6 | 10.1.61-150200.5.85.1 | [SUSE-SU-2026:5073-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5073-1.md) | Nov 7, 2026 |
| Linux | tomcat10 sles 15.7 | 10.1.61-150200.5.85.1 | [SUSE-SU-2026:5073-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5073-1.md) | Nov 7, 2026 |
| Linux | tomcat9 Debian 12.15 (bookworm) | 9.0.70-2 | [DEBIAN-CVE-2026-101356](https://patchblox.com/security/data/fix/linux/debian-cve-2026-101356.md) | Oct 21, 2026 |
| Linux | tomcat9 Debian 13.5 (trixie) | 9.0.70-2 | [DEBIAN-CVE-2026-101356](https://patchblox.com/security/data/fix/linux/debian-cve-2026-101356.md) | Oct 21, 2026 |
| Linux | tomcat9 Debian 14 | 9.0.70-2 | [DEBIAN-CVE-2026-101356](https://patchblox.com/security/data/fix/linux/debian-cve-2026-101356.md) | Oct 21, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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