User Impersonation Affecting org.apache.syncope.core:syncope-core-spring package, versions [3.0.15,4.0.0-M0)[4.0.3,4.0.8)[4.1.0-M0,4.1.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHESYNCOPECORE-20186783
- published28 Sept 2026
- disclosed14 Sept 2026
- creditUnknown
Introduced: 14 Sep 2026
NewCVE-2026-87785 (opens in a new tab)How to fix?
Upgrade org.apache.syncope.core:syncope-core-spring to version 4.0.0-M0, 4.0.8, 4.1.3 or higher.
Overview
Affected versions of this package are vulnerable to User Impersonation in the JWT authentication process when the JWKS settings, including at least the protocol and key, are disclosed. An attacker can gain unauthorized access to another user's privileges by spoofing the JWT subject after obtaining a valid JWT.