EUVD-2026-45962
GHSA-p386-8623-243g
Severity by source
Network-facing REST API (AV:N) exploited by a low-privileged self-service user (PR:L) with no interaction; self-granting admin Roles yields full confidentiality, integrity and availability impact over the IAM system.
Primary rating from Vendor (apache).
Lifecycle Timeline
2DescriptionCVE.org
Improper Privilege Management vulnerability in Apache Syncope.
When:
- the all-Java user workflow adapter is configured, or
- the Flowable user workflow adapter is configured, bearing a BPMN definition not requiring admin approval for user self registration of self update requests
the following scenario could happen. A REST API call can allow the user to grant themselves one or more of defined Roles, thus gaining their Entitlements and becoming in fact an administrator; the actual Entitlements gained depend on the Roles that are effectively defined on the specific Syncope deployment.
This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1.
Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue.
Articles & Coverage 4
AnalysisAI
Privilege escalation in Apache Syncope's identity management engine allows a user to grant themselves defined Roles through a REST API call, inheriting those Roles' Entitlements and effectively becoming an administrator. The flaw (CWE-269, Improper Privilege Management) is exploitable only in deployments using the all-Java user workflow adapter, or the Flowable adapter with a BPMN definition that does not require admin approval for self-registration or self-update. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target Syncope deployment to be configured with the all-Java user workflow adapter, OR with the Flowable user workflow adapter using a BPMN definition that does NOT require administrator approval for user self-registration or self-update requests - this specific workflow configuration IS the enabling condition, not a generic prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector or EPSS score was provided, so quantitative exploitation-probability signals are unavailable and must be flagged as missing. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | In a Syncope deployment configured with the all-Java adapter (or a Flowable BPMN flow lacking admin approval), an attacker submits a crafted self-update or self-registration REST API call that includes a Role assignment for a privileged Role. The workflow honors the request, and the attacker's account immediately inherits that Role's administrative Entitlements, granting effective admin control over the IAM system. … |
| Remediation | Vendor-released patch: upgrade to Apache Syncope 4.0.7 or 4.1.2, which fix this issue per the Apache advisory (https://lists.apache.org/thread/6r8cngvy43y2yk4jj3w060dt8vx0yzpr); deployments on the 3.0.x branch (3.0.0-M0 through 3.0.16) have no fixed 3.0.x release listed and should migrate to a patched 4.x line. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Apache Syncope deployments and identify those using the all-Java user workflow adapter or Flowable adapter with BPMN configurations. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
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