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🛡️ CVE-2026-23795 — syncope

🟡 CVSS 4.9 — Medium ✅ No Known Exploit CWE-611 NVD
4.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Apache Syncope: Console XXE on Keymaster parameters

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: High — administrative rights are needed first.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: None.
  • Availability impact: None.

Weakness class

CVE-2026-23795 is classified as CWE-611: XML External Entity Reference (XXE). An XML parser resolves external entities, letting a crafted document read local files or reach internal services.

Affected software

CVE-2026-23795 is recorded against 2 packages.

  • org.apache.syncope.client.idrepo:syncope-client-idrepo-console (from 4.0.0 up to 4.0.4)
  • syncope (from 4.0.0 up to 4.0.4)

Timeline and source

Published on 3 February 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Package)
lists.apache.org (Web)
www.openwall.com (Web)

Other advisories for this package

org.apache.syncope.client.idrepo:syncope-client-idrepo-console has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-611: XML External Entity Reference (XXE)) in other software:

Details

Severity Medium
CVSS Score 4.9
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE CWE-611
Public Exploit ✅ No
Source NVD
Published 2026-02-03
Updated 2026-08-20
Modified 2026-02-03
Fix URL N/A

Affected Packages

Software From version Fixed in
org.apache.syncope.client.idrepo:syncope-client-idrepo-console 4.0.0 4.0.4
syncope 4.0.0 4.0.4

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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