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CVE-2026-23794
February 03, 2026
Reflected XSS in Apache Syncope's Enduser Login page. An attacker that tricks a legitimate user into clicking a malicious link and logging in to Syncope Enduser could steal that user's credentials. This issue affects Apache Syncope: from 3.0 through 3.0.15, from 4.0 through 4.0.3. Users are recommended to upgrade to version 3.0.16 / 4.0.4, which fix this issue.
Affected Packages
https://github.com/apache/syncope.git (GITHUB):
Affected version(s) >=syncope-3.0.0-M0 <syncope-3.0.16
Fix Suggestion:
Update to version syncope-3.0.16
https://github.com/apache/syncope.git (GITHUB):
Affected version(s) >=syncope-4.0.0 <syncope-4.0.4
Fix Suggestion:
Update to version syncope-4.0.4
org.apache.syncope.client.idrepo:syncope-client-idrepo-common-ui (JAVA):
Affected version(s) >=3.0.0 <3.0.16
Fix Suggestion:
Update to version 3.0.16
org.apache.syncope.client.idrepo:syncope-client-idrepo-common-ui (JAVA):
Affected version(s) >=4.0.0 <4.0.4
Fix Suggestion:
Update to version 4.0.4
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CVSS v4
Base Score:
8.5
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
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:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.03