HTTP Request Smuggling Affecting tomcat9 package, versions <9.0.70-2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.31% (22nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-TOMCAT9-20079434
  • published24 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 Echo:latest tomcat9 to version 9.0.70-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9 package and not the tomcat9 package as distributed by Echo. See How to fix? for Echo:latest 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