CVE-2026-103119: Apache Tomcat: AJP response mix-up
Published Oct 20, 2026
·Updated
Buffer under-read vulnerability in Apache Tomcat meant that a large non-blocking write could result in the response body being split between the current request and the next request received on that connection leading most likely to failure of the second request and possibly leakage of data from the first response to the second.
This issue affects Apache Tomcat: from 11.0.0-M25 through 11.0.26.
Users are recommended to upgrade to version 11.0.27, which fixes the issue.
Affected Software
1 affected component
Apache Tomcat>=11.0.0-M25<=11.0.26
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 11.0.27
Event History
Oct 20, 2026
CVE Published
via MITRE·01:54 PM
Data Sourced
via MITRE·01:54 PM
DescriptionWeakness
Data Sourced
via NVD·02:16 PM
DescriptionSeverityWeakness