Vulnerability · Published May 25, 2026 · Assigned by apache
CVE-2026-42782Apache Syncope: Post-auth RCE via Groovy static
High 7.2
In plain English
A high-severity security flaw in Apache Syncope from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.syncope.core:syncope-core-spring | no fix listed | GHSA-gq7g-vg2q-jvq3 |
| Maven | org.apache.syncope.core:syncope-core-spring | 4.0.6 | GHSA-gq7g-vg2q-jvq3 |
| Maven | org.apache.syncope.core:syncope-core-spring | 4.1.1 | GHSA-gq7g-vg2q-jvq3 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Syncope | 3.0 – through 3.0.164.0 – through 4.0.54.1 – through 4.1.0 |
Weakness: CWE-653 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H