Apache Syncope, the widely deployed open-source identity management platform, has patched a batch of critical vulnerabilities that could let low-privilege users escalate to administrator status and execute arbitrary code on the server.
The Apache Software Foundation disclosed six new CVEs affecting versions 3.0.x, 4.0.x, and 4.1.x, with fixes rolled out in versions 4.1.2 and 4.0.7.
Apache Syncope Flaws
The most severe issue, tracked as CVE-2026-62183, involves an improper privilege management flaw in Syncope’s self-service workflow.
When the all-Java user workflow adapter or a Flowable BPMN definition without admin-approval gates is configured, a crafted REST API call allows a regular user to grant themselves administrative Roles and, by extension, the Entitlements tied to those roles.
This effectively turns any authenticated user into a full administrator, depending on how Roles are defined in the deployment.
Compounding the risk, CVE-2026-63071 and two related flaws (CVE-2026-53421, CVE-2026-53405) stem from incomplete isolation of Groovy scripting used in Syncope’s Implementations, Scripted Connectors, and Flowable BPMN ScriptTasks.
Administrators with limited entitlements can craft malicious Groovy classes or BPMN process definitions that escape the sandbox entirely, achieving remote code execution on the underlying server, turning a scoped admin role into full system compromise.
According to Apache, the flaw CVE-2026-57308 is a SQL injection flaw in the Audit Events search feature, where unsanitized sort parameters allow stacked SQL queries.
CVE-2026-62418 is a low-privilege SSRF vulnerability triggered during Connector and Resource validation checks, potentially allowing internal network reconnaissance or interaction with internal services.
| CVE ID | Vulnerability Type | Severity | Affected Versions | Fixed In |
|---|---|---|---|---|
| CVE-2026-63071 | RCE via Groovy sandbox bypass | Moderate | 4.1.0–4.1.1, 4.0.0–4.0.6, 3.0.0–3.0.16 | 4.1.2 / 4.0.7 |
| CVE-2026-62418 | Authenticated SSRF (Connectors/Resources) | Moderate | 4.1.0–4.1.1, 4.0.0–4.0.6, 3.0.0–3.0.16 | 4.1.2 / 4.0.7 |
| CVE-2026-62183 | Privilege escalation via self-service | Important | 4.1.0–4.1.1, 4.0.0–4.0.6, 3.0.0–3.0.16 | 4.1.2 / 4.0.7 |
| CVE-2026-57308 | SQL injection (Audit Events search) | Important | 4.1.0–4.1.1, 4.0.0–4.0.6, 3.0.0–3.0.16 | 4.1.2 / 4.0.7 |
| CVE-2026-53421 | RCE via Scripted Connector | Moderate | 4.1.0–4.1.1, 4.0.0–4.0.6, 3.0.0–3.0.16 | 4.1.2 / 4.0.7 |
| CVE-2026-53405 | RCE via Flowable BPMN Groovy ScriptTask | Moderate | 4.1.0–4.1.1, 4.0.0–4.0.6, 3.0.0–3.0.16 | 4.1.2 / 4.0.7 |
All six flaws require authenticated access, but the privilege escalation bug (CVE-2026-62183) is especially concerning since it lowers the bar from “any authenticated user” to “full administrator” without approval workflows.
Organizations running self-hosted Syncope deployments for identity and access management should prioritize upgrading to 4.1.2 or 4.0.7 immediately, and audit BPMN workflow definitions for missing admin-approval gates as a compensating control.
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