Groovy sandbox bypass enabling RCE in Apache Syncope (CVE-2026-63071)

Apache Syncope contains an Improper Isolation or Compartmentalization vulnerability in its Groovy security sandbox. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code that bypasses the sandbox, potentially enabling remote code execution. Affected versions: - Apache Syncope (org.apache.syncope.core:syncope-core-spring) 3.0.0-M0 through 3.0.16 - Apache Syncope (org.apache.syncope.core:syncope-core-spring) 4.0.0-M0 through 4.0.6 - Apache Syncope (org.apache.syncope.core:syncope-core-spring) 4.1.0-M0 through 4.1.1 We recommend updating to: 4.0.7, 4.1.2. CVSS 9.8 · our assessment: act_now Reference: https://lists.apache.org/thread/2236mlm6hbvs6g16yqz5y9s8bb7q1lo1 Details: https://vuln.today/cve/CVE-2026-63071