CVE-2026-53421

critical · 9.8

Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can achieve remote code execution through the connector subsystem by relying on scripted connectors' (REST and SQL) capability to run Groovy scripts. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1. Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue by hardening the Groovy security sandbox.

9.8

CVSS

0.7%

EPSS (exploit prob.)

51st

EPSS percentile

2026-07-20

Published

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

Weaknesses

CWE-653

Affected products

Vendor	Product	Affected versions
apache	syncope	>= 3.0.0, <= 3.0.16
apache	syncope	>= 4.0.0, < 4.0.7
apache	syncope	>= 4.1.0, < 4.1.2

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/nmzvz6gb2ldm30wvyk613r8dfrb6r8yx
http://www.openwall.com/lists/oss-security/2026/07/20/7

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-53421