CVE-2026-42782 — Apache Syncope: Post-auth RCE via Groovy static

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Syncope	affected 3.0 through 3.0.16; affected 4.0 through 4.0.5; affected 4.1 through 4.1.0

CWE

CWE-653

References

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

ADP enrichment

CVE

No English description supplied.

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

CISA-ADP

No English description supplied.

No references supplied.