Sensitive Information Exposure in Apache Syncope by Apache
CVE-2026-78336

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Syncope
Vendor
CVE Published:
14 September 2026

What is CVE-2026-78336?

An issue has been identified in Apache Syncope that allows authenticated users to retrieve a list of configured OIDC providers for Single Sign-On (SSO). This retrieval exposes sensitive configuration data, including client secrets, in the response payload without regard to user entitlements. It is crucial for users running affected versions to upgrade to 4.0.8 or 4.1.3 to mitigate this security risk.

Affected Version(s)

Apache Syncope 3.0.0-M0 <= 3.0.16

Apache Syncope 4.0.0-M0 <= 4.0.7

Apache Syncope 4.1.0-M0 <= 4.1.2

References

https://lists.apache.org/thread/h399sqmf4wgnfxxpd6x9lm3m6...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Moritz Theile
.