CVE-2026-53405
Apache Syncope has a critical flaw that lets an administrator import and run arbitrary Groovy scripts via BPMN processes. The scripts execute directly on the server with no sandbox, giving attackers full control. The issue is fixed in newer releases.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Apache Syncope versions 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.6, and 4.1.0-M0 through 4.1.1. Typical users are organizations running Syncope for identity management.
Real-world impact
An attacker who can act as an administrator can run arbitrary code on the Syncope server, potentially compromising the entire system, stealing data, or taking control of the host.
Why this severity
The CVSS score of 9.8 reflects that the flaw can be exploited over the network by anyone with administrative rights, requires no special privileges or user interaction, and gives attackers full control over the server, affecting confidentiality, integrity, and availability.
What to do about it
- 01Upgrade Apache Syncope to version 4.0.7 or later (or 4.1.2 or later).
- 02Restart the Syncope service to apply the update.
NVD-referenced vendor advisory
Timeline
- Jul 20, 2026 · 13d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 21, 2026 · 12d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
- Jul 27, 2026 · 6d agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- lists.apache.org/thread/vdq0tk6ylffz6trbgbll…mailing listvendor advisory
- openwall.com/lists/oss-security/2026/07/…mailing listthird party advisory