How severe is CVE-2026-23795?

CVE-2026-23795 has a CVSS score of 4.9/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2026-23795?

CVE-2026-23795 affects the following packages: org.apache.syncope.client.idrepo:syncope-client-idrepo-console (Maven), org.apache.syncope.client.idrepo:syncope-client-idrepo-console (Maven). Ecosystems affected: Maven.

How do I fix CVE-2026-23795?

Update org.apache.syncope.client.idrepo:syncope-client-idrepo-console to 3.0.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-23795 is resolved across your whole dependency graph.

How do I detect CVE-2026-23795 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.syncope.client.idrepo:syncope-client-idrepo-console, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-23795 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2026-23795 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-23795 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-23795?

CVE-2026-23795 has an EPSS (Exploit Prediction Scoring System) score of 2.0%, placing it in the 80th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-23795?

CVE-2026-23795 is classified as XML External Entity (XXE) (CWE-611). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-23795 published, and has it been updated?

CVE-2026-23795 was published on February 3, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2026-23795 — syncope-client-idrepo-con…

MEDIUM

CVE-2026-23795 is a medium-severity (CVSS 4.9) XML External Entity (XXE) vulnerability in org.apache.syncope.client.idrepo:syncope-client-idrepo-console. A fix is available for org.apache.syncope.client.idrepo:syncope-client-idrepo-console — see the affected versions and patch details below.

Apache Syncope: Console XXE on Keymaster parameters

Also known asGHSA-73f3-rqqf-2j54

Published

Feb 3, 2026

Updated

Oct 28, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.0%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs80th percentile — riskier than 80% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

☕org.apache.syncope.client.idrepo:syncope-client-idrepo-console☕org.apache.syncope.client.idrepo:syncope-client-idrepo-console

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.syncope.client.idrepo:syncope-client-idrepo-console`	≥ 3.0.0&&< 3.0.16	3.0.16`org.apache.syncope.client.idrepo:syncope-client-idrepo-console:3.0.16`
☕Maven	`org.apache.syncope.client.idrepo:syncope-client-idrepo-console`	≥ 4.0.0&&< 4.0.4	4.0.4`org.apache.syncope.client.idrepo:syncope-client-idrepo-console:4.0.4`

Affected Products

1 product · 2 configurations

Application

syncopeapache

≥ 4.0.0 && < 4.0.4

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.syncope.client.idrepo:syncope-client-idrepo-console, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.syncope.client.idrepo:syncope-client-idrepo-console to 3.0.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-23795 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

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CVSS Score

4.9/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CWE Classification

CWE-611XML External Entity (XXE)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Feb 3, 2026

Last updated

Oct 28, 2026

Identifiers

CVE-2026-23795

GHSA-73f3-rqqf-2j54

References

Advisorygithub.com · CVE 2026 23795.json Advisorylists.apache.org · mzgbdn8hzk8vr94o660njcc7w62c2pos Advisorynvd.nist.gov · CVE 2026 23795 Webopenwall.com Webrepo.maven.apache.org · maven2 Packagegithub.com · syncope

Related vulnerabilities

Also affects syncope-client-idrepo-console

This CVE is medium severity; 1 of 1 other CVE affecting syncope-client-idrepo-console is rated as high or higher (top: high).

CVE-2024-38503

Same weakness: CWE-611

This CVE is medium severity; 7 of 7 other CVEs with CWE-611 are rated as high or higher (top: critical).

CVE-2026-108358CVE-2026-108357CVE-2026-61586CVE-2026-61741CVE-2026-61570CVE-2026-55848CVE-2026-54079Browse all CWE-611

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026

CVE-2026-23795 — syncope-client-idrepo-con…

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2026-23795 in your dependencies?