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CVE-2026-23794

Apache Syncope: Reflected XSS on Enduser Login

Published: Feb 3, 2026Updated: Feb 6, 2026 Sources: CVE List NVD GHSACWE-79
6.8MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 71.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache SyncopeOn-prem
Enterprise Software
Maven
package-ecosystem
org.apache.syncope.client.idrepo:syncope-client-idrepo-common-ui
OSS Libraries
apache
oss-project·USaka apache http server, apache httpd
syncopeOn-premWeb App
Web & CMS Plugins / cms-core

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://lists.apache.org/thread/7h30ghqdsf3spl3h7gdmscxofrm8ygjo
lists.apache.org
https://nvd.nist.gov/vuln/detail/CVE-2026-23794
nvd.nist.gov
https://github.com/apache/syncope
github.com
and 1 more references View all →
News mentions
1

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