CVE-2026-42782

Name: CVE-2026-42782
Creator: NVD / NIST
Published: 2026-05-25T16:16:19.717+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2026-42782 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.65%

46.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-653

Affected Software

Vendor	Product	Versions
Apache	Syncope	>= 3.0.0, <= 3.0.16
Apache	Syncope	>= 4.0.0, < 4.0.6
Apache	Syncope	4.1.0

References

https://lists.apache.org/thread/b869ms0ofrd129f7tgsn9flxgv9ztg2rMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/25/4Mailing List, Third Party Advisory

Timeline

Published: May 25, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-42782?

How severe is CVE-2026-42782?

CVE-2026-42782 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42782?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42782?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST