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CVE-2026-111259
Published:November 10, 2026
Updated:November 13, 2026
The embedded server generates HTTP session identifiers with a non-cryptographic random number generator by default. A remote attacker who observes a session identifier can predict the identifiers issued to other users and hijack their sessions, if the application relies on HTTP sessions for authentication. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.
Affected Packages
https://github.com/apache/tomee.git (GITHUB):
Affected version(s) =tomee-project-11.0.0-M1 <tomee-project-11.0.0-M2
Fix Suggestion:
Update to version tomee-project-11.0.0-M2
https://github.com/apache/tomee.git (GITHUB):
Affected version(s) >=tomee-1.0.0-beta-2 <tomee-project-10.3.0 || >=tomee-7.0.0-M1 <tomee-project-10.3.0 || =tomee-project-7.1.5 <tomee-project-10.3.0 || >=tomee-8.0.0-M1 <tomee-project-10.3.0 || >=tomee-project-8.0.3 <tomee-project-10.3.0 || >=tomee-project-9.0.0-M8 <tomee-project-10.3.0 || =tomee-9.1.2 <tomee-project-10.3.0 || >=tomee-project-10.0.0-M1 <tomee-project-10.3.0
Fix Suggestion:
Update to version tomee-project-10.3.0
org.apache.tomee:tomee-embedded (JAVA):
Affected version(s) =11.0.0-M1 <11.0.0-M2
Fix Suggestion:
Update to version 11.0.0-M2
org.apache.tomee:tomee-embedded (JAVA):
Affected version(s) >=9.0.0-M8 <10.3.0 || >=10.0.0-M1 <10.3.0 || >=7.0.0-M1 <10.3.0 || >=8.0.0-M1 <10.3.0
Fix Suggestion:
Update to version 10.3.0
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CVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
EPSS
Base Score:
0.20