CVE-2026-55955: tomcat before 9.0.119 (exclusive), from 10.1.0 (inclusive), before 10.1.56 (exclusive), from 11.0.0 (inclusive)…

Affected technology

tomcat · before 9.0.119 (exclusive)
apache

tomcat · from 10.1.0 (inclusive), before 10.1.56 (exclusive)
apache

tomcat · from 11.0.0 (inclusive), before 11.0.23 (exclusive)
apache

Apache Tomcat · 11.0.0-M1 through 11.0.22, 10.1.0-M1 through 10.1.55, 9.0.13 through 9.0.118, 8.5.38 through 8.5.100, 7.0.100 through 7.0.109
Apache Software Foundation

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality and integrity impact as low; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.