Apache Tomcat: HTTP/2 trailer header cross-contamination
Summary
| CVE | CVE-2026-88041 |
|---|---|
| State | PUBLISHED |
| Assigner | apache |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-20 14:17:04 UTC |
| Updated | 2026-10-20 19:34:00 UTC |
| 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. |
Risk And Classification
Problem Types: CWE-459 | CWE-459 CWE-459 Incomplete cleanup
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Apache Software Foundation | Apache Tomcat | affected 11.0.0-M23 11.0.26 semver | Not specified |
| CNA | Apache Software Foundation | Apache Tomcat | affected 10.1.27 10.1.60 semver | Not specified |
| CNA | Apache Software Foundation | Apache Tomcat | affected 9.0.92 9.0.122 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| lists.apache.org/thread.html/dnmm9l3byytg3l66nk1jrqfrl7jty7n1 | [email protected] | lists.apache.org | |
| www.openwall.com/lists/oss-security/2026/10/20/24 | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Wentao He (en)
There are currently no legacy QID mappings associated with this CVE.