CVE-2026-53421 | BDVDB-2026-350021 Detail

ApacheApache Syncope

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-653 Improper Isolation or Compartmentalization

References#

Exploit#

No public exploit known

History#

Version 12026-07-20Record published in the CVE List.
Version 22026-07-21Most recent update recorded in the CVE List.

Published

Published: 2026-07-20
Last modified: 2026-07-21

Vendor information

Vendor: Apache
Product: Apache Syncope

All Apache vulnerabilities

Score

9.8 Critical

EPSS

1.1%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 66.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 3.0.0-M0 and <= 3.0.16
Fixed
Not stated
Vulnerable
>= 4.0.0-M0 and <= 4.0.6
Fixed
Not stated
Vulnerable
>= 4.1.0-M0 and <= 4.1.1
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).