Vulnerability intelligence

CVE-2026-103119

Apache Software Foundation Apache Tomcat CWE-127

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.

CVSS Score

9.1

Critical

EPSS — Exploit Probability

—

Awaiting FIRST.org data · checked 2026-10-21

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Check vendor advisories