Medium severity · published Feb 3, 2026
CVE-2026-23795
Apache Syncope: Console XXE on Keymaster parameters
4.9
CVSS
1.9%
EPSS
No
On KEV
Description
Improper Restriction of XML External Entity Reference vulnerability in Apache Syncope Console.
An administrator with adequate entitlements to create or edit Keymaster parameters via Console can construct malicious XML text to launch an XXE attack, thereby causing sensitive data leakage occurs.
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Apache Syncope · Apache Software Foundation
3.0 through 3.0.15; 4.0 through 4.0.3 · source: vendor
SY
Syncope · Apache
3.0.0 before 3.0.16; 4.0.0 before 4.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23795
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23795
Mailing List
https://lists.apache.org/thread/mzgbdn8hzk8vr94o660njcc7w62c2pos
Mailing List
http://www.openwall.com/lists/oss-security/2026/02/02/2
More from Apache Syncope
9.8
CVE-2026-73370
Apache Syncope: Cross-Realm boundaries reconciliation bypass
9.8
CVE-2026-73470
Apache Syncope: Delegating users can grant unowned Roles
9.8
CVE-2026-73579
Apache Syncope: Non-recursive Any search could skip Realms restrictions
9.8
CVE-2026-75030
Apache Syncope: Incomplete authorization checks for Group members deprovisioning
9.8
CVE-2026-77051
Apache Syncope: SQL injection via unsanitized entityKey and opEvent in Audit Events search