CVE-2026-88041
Apache Tomcat: HTTP/2 trailer header cross-contamination
At a glance
- Severity
- Not available
- EPSS
- EPSS 0.25 % · percentile 16 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Deferred
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.
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2026-105007
- GCVE · GCVE-0-2026-88041
CERT-FR advisories
- CERTFR-2026-AVI-1358 — Multiples vulnérabilités dans Apache Tomcat · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache Tomcat | affected 11.0.0-M23 ≤ 11.0.26 ; affected 10.1.27 ≤ 10.1.60 ; affected 9.0.92 ≤ 9.0.122 |
References
- https://lists.apache.org/thread.html/dnmm9l3byytg3l66nk1jrqfrl7jty7n1
- http://www.openwall.com/lists/oss-security/2026/10/20/24
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |