Buffer Under-Read Vulnerability in Apache Tomcat by Apache
CVE-2026-103119

Currently unrated

Key Information:

Vendor

Apache

Vendor
CVE Published:
20 October 2026

What is CVE-2026-103119?

A buffer under-read vulnerability in Apache Tomcat may occur during large non-blocking writes, resulting in the response body potentially being split across requests. This can lead to the failure of subsequent requests and might expose sensitive data from the previous response. Users of affected versions are strongly advised to upgrade to version 11.0.27 to mitigate this vulnerability.

Affected Version(s)

Apache Tomcat 11.0.0-M25 <= 11.0.26

References

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tuomo Hänninen
.