HTTP Request Smuggling Affecting tomcat11-jsp-4.0-api package, versions <0:11.0.26-0.1.hum1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.31% (22nd percentile)

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  • Snyk IDSNYK-RHEL10-TOMCAT11JSP40API-20235468
  • published29 Sept 2026
  • disclosed23 Sept 2026

Introduced: 23 Sep 2026

NewCVE-2026-86350  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade RHEL:10 tomcat11-jsp-4.0-api to version 0:11.0.26-0.1.hum1 or higher.
This issue was patched in RHSA-2026:68258.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat11-jsp-4.0-api package and not the tomcat11-jsp-4.0-api package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up.

This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121.

Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

CVSS Base Scores

version 3.1