Home/CVE/Improper Restriction of XML External Entity Reference vulnerability in Apache Syncope Console. An administrator with ade
CVE

CVE-2026-23795

Improper Restriction of XML External Entity Reference vulnerability in Apache Syncope Console. An administrator with ade

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.

MEDIUM · CVSS 4.9 EPSS 0.00101
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-611Improper Restriction of XML External Entity Reference
▤

Affected Products & Versions

2
apache syncope>= 3.0.0 and < 3.0.16
apache syncope>= 4.0.0 and < 4.0.4
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.apache.syncope.client.idrepo:syncope-client-idrepo-console MODERATE fixed in 3.0.16
▣

Scoring & Timeline

4.9
MEDIUM · CVSS v3.1 · security@apache.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Feb 2026 · 04:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.apache.org/thread/mzgbdn8hzk8vr94o660njcc7w62c2posMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/02/02/2Mailing ListThird Party Advisory
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