# CVE-2026-88041: tomcat9: Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into...

CVE-2026-88041 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-88041, released October 21, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-88041
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0051
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2026

## Description

Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request.    This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.60, from 9.0.92 through 9.0.122.    Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix 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-2026-88041](https://patchblox.com/security/data/fix/linux/debian-cve-2026-88041.md) | Oct 21, 2026 |
| Linux | tomcat9 Debian 13.5 (trixie) | 9.0.70-2 | [DEBIAN-CVE-2026-88041](https://patchblox.com/security/data/fix/linux/debian-cve-2026-88041.md) | Oct 21, 2026 |
| Linux | tomcat9 Debian 14 | 9.0.70-2 | [DEBIAN-CVE-2026-88041](https://patchblox.com/security/data/fix/linux/debian-cve-2026-88041.md) | Oct 21, 2026 |

---

Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.