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Remote Code Execution in Apache Syncope Groovy Implementations
CVE-2025-57738 is a remote code execution vulnerability in Apache Syncope’s extensibility mechanism for custom Java and Groovy implementations. Apache Syncope allows deployments to customize core behavior by supplying implementations of selected interfaces, and Groovy-based implementations are especially exposed because they support runtime reload. In affected versions, a malicious administrator can inject crafted Groovy code that is subsequently executed by the running Apache Syncope Core instance. The flaw was addressed by forcing Groovy code to execute inside a sandbox, indicating insufficient restriction of dynamically supplied code in the vulnerable design. Affected versions include Syncope 4.0.0 through 4.0.1, 3.0.0 through 3.0.13, and 2.1.0 through 2.1.14.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation allows execution of attacker-supplied Groovy code within the Apache Syncope Core runtime. This can result in full compromise of the Syncope application context, including arbitrary command or code execution with the privileges of the Syncope service, unauthorized access to managed identity data and configuration, alteration of application behavior, and potential follow-on actions against connected systems and resources administered through Syncope.
If you can’t patch tonight, do this now.
No complete workaround is documented other than applying the vendor fix. Until upgrading, reduce exposure by strictly limiting administrative access, reviewing and removing unnecessary privileges for users able to define or modify custom implementations, disabling or avoiding Groovy-based customizations where operationally feasible, and closely auditing changes to extensibility features and administrative actions involving custom code.
Patch, then assume compromise.
Upgrade Apache Syncope to version 4.0.2 or 3.0.14, as applicable. These releases fix the issue by enforcing sandboxed execution for Groovy code. For deployments on the 2.1 branch, the available information does not identify a fixed 2.1 release; users should migrate to a supported patched branch or rebuild from corrected source if vendor guidance for that branch exists.
No public exploits tracked yet. Mallory keeps watching.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.