CVE-2026-42782

EUVD-2026-31696

25.05.2026, 16:16

Improper Isolation or Compartmentalization vulnerability in Apache Syncope.

An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code reaching a non-sandboxed execution path via the class static initializer.

This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0.

Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by forcing even the static initializer in Groovy code to run in a sandbox.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.2 HIGH	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 46%

Affected Products (NVD)

Vendor	Product	Version
apache	syncope	3.0.0 ≤ 𝑥 ≤ 3.0.16
apache	syncope	4.0.0 ≤ 𝑥 < 4.0.6
apache	syncope	4.1.0

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-653 - Improper Isolation or Compartmentalization
The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

References

https://lists.apache.org/thread/b869ms0ofrd129f7tgsn9flxgv9ztg2r

http://www.openwall.com/lists/oss-security/2026/05/25/4