CVE-2026-63071CWE-653

Apache Syncope: RCE via Groovy Sandbox bypass

Critical · published July 20, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
54.5
In the wild
Unconfirmed
What it is

Improper Isolation or Compartmentalization vulnerability in Apache Syncope.

An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code bypassing the Groovy security sandbox.

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 by tightening the Groovy security sandbox.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00752 · 54.5th percentile
Weakness
CWE-653 · Improper Isolation or Compartmentalization
Published
2026-07-20T14:19Z
EPSS history
Timeline
  • 20 JUL 14:19Z
    Apache Syncope: RCE via Groovy Sandbox bypass
    cvelistv5