CVE-2026-73095
Published:November 05, 2026
Updated:November 09, 2026
Allocation of Resources Without Limits or Throttling vulnerability in Apache Juneau.
The MessagePack parser, which the REST server enables by default, sizes buffers from length values in the input. An unauthenticated client can send a few bytes that force a multi-gigabyte allocation and an OutOfMemoryError, causing denial of service. Related unbounded allocations in REST request handling (multipart uploads and request reader buffers) are fixed at the same time.
This issue affects Apache Juneau: through 9.2.0.
Users are recommended to upgrade to version 9.2.1, which fixes the issue.
Affected Packages
https://github.com/apache/juneau.git (GITHUB):
Affected version(s) >=juneau-6.0.0-incubating-RC2 <juneau-9.2.1 || >=juneau-7.0.0-RC1 <juneau-9.2.1 || >=juneau-8.0.0-RC1 <juneau-9.2.1 || >=juneau-9.0-B1-RC1 <juneau-9.2.1 || >=juneau-6.4.0-incubating-RC1 <juneau-9.2.1Fix Suggestion:
Update to version juneau-9.2.1org.apache.juneau:juneau-marshall (JAVA):
Affected version(s) =6.4.0-incubating <9.2.1 || >=8.0.0 <9.2.1 || >=7.0.0 <9.2.1 || >=9.0-B1 <9.2.1Fix Suggestion:
Update to version 9.2.1org.apache.juneau:juneau-rest-server (JAVA):
Affected version(s) =6.4.0-incubating <9.2.1 || >=8.0.0 <9.2.1 || >=7.0.0 <9.2.1 || >=9.0-B1 <9.2.1Fix Suggestion:
Update to version 9.2.1Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
EPSS
Base Score:
0.43