CVE-2026-73178
Published:September 14, 2026
Updated:September 22, 2026
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope.
An administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body.
These values can be then used to perform further REST requests, impersonating users with higher administration entitlements.
This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.
Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
Affected Packages
https://github.com/apache/syncope.git (GITHUB):
Affected version(s) >=syncope-4.0.0-M0 <syncope-4.0.8Fix Suggestion:
Update to version syncope-4.0.8https://github.com/apache/syncope.git (GITHUB):
Affected version(s) >=syncope-4.1.0-M0 <syncope-4.1.3Fix Suggestion:
Update to version syncope-4.1.3org.apache.syncope.core:syncope-core-provisioning-java (JAVA):
Affected version(s) >=4.1.0-M0 <4.1.3Fix Suggestion:
Update to version 4.1.3org.apache.syncope.core:syncope-core-provisioning-java (JAVA):
Affected version(s) >=4.0.0-M0 <4.0.8Fix Suggestion:
Update to version 4.0.8Related 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
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
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
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
EPSS
Base Score:
0.41