Improper XML Handling in Apache Syncope Console
CVE-2026-23795

4.9MEDIUM

Key Information:

Vendor

Apache
Status
Apache Syncope
Vendor
CVE Published:
3 February 2026

What is CVE-2026-23795?

The vulnerability in the Apache Syncope Console allows authenticated administrators to manipulate Keymaster parameters through crafted XML. An attacker can exploit this flaw to launch an XML External Entity (XXE) attack, which may lead to unauthorized exposure of sensitive data. This affects multiple versions of Apache Syncope, specifically versions from 3.0 to 3.0.15 and 4.0 to 4.0.3. It is advisable for users to upgrade to versions 3.0.16 or 4.0.4 to mitigate this security risk.

Affected Version(s)

Apache Syncope 3.0 <= 3.0.15

Apache Syncope 4.0 <= 4.0.3

References

https://lists.apache.org/thread/mzgbdn8hzk8vr94o660njcc7w...
vendor-advisory

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

follycat
Y0n3er
.