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CVE-2026-109083— Apache Syncope: Remote Code Execution via Flowable JUEL expression

Quick assessment

Affected
Apache Software Foundation Apache Syncope
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Syncope 中存在隔离或分区不当的漏洞。 拥有足够权限的管理员可以通过 REST API 导入任意的 BPMN 流程定义，随后启动该流程。当导入并启动包含 JUEL 表达式的 BPMN 流程时，该表达式将在服务器上直接执行，且没有任何沙箱隔离机制。 此漏洞影响以下版本的 Apache Syncope： 3.0.0-M0 至 3.0.16 4.0.0-M0 至 4.0.8 4.1.0 至 4.1.3 建议用户升级至 4.0.9 或 4.1.4 版本，这些版本通过拒绝包含表达式属性的 BPMN 定义来

AI Predicted 9.8 Difficulty: Easy
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I. Basic Information for CVE-2026-109083

Vulnerability Information
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Vulnerability Title
Apache Syncope: Remote Code Execution via Flowable JUEL expression
Source: CVE Program / CVE List V5
Vulnerability Description
Improper isolation or compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start the process. When a BPMN process containing a JUEL expression is imported and started, the expression is executed directly on the server, with no sandbox. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue by rejecting BPMN definitions including expression attributes.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的划分
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Syncope 3.0.0-M0 ~ 3.0.16 -

II. Public POCs for CVE-2026-109083

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III. Intelligence Information for CVE-2026-109083

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Other References for CVE-2026-109083 (1)

Same Patch Batch · Apache Software Foundation · 2026-11-02 · 6 CVEs total

CVE-2026-111959 Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads
CVE-2026-114364 Apache Syncope: SQL injection via unsanitized opEvent in Audit Events search
CVE-2026-113687 Apache Syncope: RCE via ProcessGroovyMethodsSandbox bypass
CVE-2026-113511 Apache Syncope: Delegated administration boundaries can be bypassed for Realm update
CVE-2026-110535 Apache Syncope: AuthProfile value escalation via self-service update

IV. Related Vulnerabilities

Same product: Apache Syncope
Same vendor: Apache Software Foundation
Same weakness: CWE-653