Riskcovery

CVE-2026-101356

Apache Tomcat: HTTP/2 request/response mix-up after error during async processing

State
Published
Severity
9.1 Critical
Published
Oct 20, 2026
Updated
Oct 20, 2026
Reserved
Sep 28, 2026

Read the record on cve.org

Description

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users.

This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122.

Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.

Scores

CVSSScoreVectorSource
3.19.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HCISA-ADP

Weaknesses

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

ProductVersions
Apache TomcatApache Software Foundation
  • 11.0.22 through 11.0.26Affected
  • 10.1.55 through 10.1.60Affected
  • 9.0.118 through 9.0.122Affected

References

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