CVE-2026-23795Network attack vector

Sensitive data disclosure via Keymaster XML entity resolution

Published Feb 3, 2026 · Updated Feb 3, 2026

XXE in Apache Syncope Console 3.0 through 3.0.15 and 4.0 through 4.0.3 allows remote authenticated users to read sensitive data. The Console parses administrator-supplied XML text in Keymaster parameters while permitting external entity resolution, allowing referenced sensitive data to be returned. Reachability requires administrator access with entitlements to create or edit those parameters; integrity and availability impacts are not reported.

CVSS severity4.9
Medium
EPSS probability1.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in Apache Syncope Console 3.0 through 3.0.15 and 4.0 through 4.0.3 allows remote authenticated users to read sensitive data. The Console parses administrator-supplied XML text in Keymaster parameters while permitting external entity resolution, allowing referenced sensitive data to be returned. Reachability requires administrator access with entitlements to create or edit those parameters; integrity and availability impacts are not reported.

The record

CVE
CVE-2026-23795
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
The Apache Software Foundation
Product
Apache Syncope
Classifications
CWE-611, T1005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0 <=3.0.15
  2. Affected versionversion=4.0 <=4.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

The Apache Software Foundation · Apache Syncopeversion=3.0 <=3.0.15; version=4.0 <=4.0.3

Published CVSS scores

4.9CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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