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CVE-2026-91197— Flowable flowable-engine through 8.0.0 XXE via ProcessDiagramLayoutFactory

Quick assessment

Affected
flowable flowable-engine
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.

Flowable flowable-engine 8.0.0 之前的版本存在 XML 外部实体注入漏洞，该漏洞位于 中。由于在解析已部署的 BPMN 资源时未禁用外部实体解析，拥有流程部署权限的攻击者可以在 BPMN 文件中嵌入包含外部实体的 DOCTYPE 声明，从而在计算图表布局时读取任意本地文件或向内部网络端点发起请求。

CVSS 6.5 · Medium
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I. Basic Information for CVE-2026-91197

Vulnerability Information
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Vulnerability Title
Flowable flowable-engine through 8.0.0 XXE via ProcessDiagramLayoutFactory
Source: CVE Program / CVE List V5
Vulnerability Description
Flowable flowable-engine through 8.0.0 contains an XML external entity injection vulnerability in ProcessDiagramLayoutFactory.parseXml() that fails to disable external entity resolution when parsing deployed BPMN resources. Attackers with process deployment privileges can embed DOCTYPE declarations with external entities in BPMN files to read arbitrary local files or trigger requests to internal network endpoints when diagram layout is computed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
flowable flowable-engine 0 ~ 8.0.0 -

II. Public POCs for CVE-2026-91197

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III. Intelligence Information for CVE-2026-91197

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Patches & Fixes for CVE-2026-91197 (2)

Vendor Advisories for CVE-2026-91197 (1)

Other References for CVE-2026-91197 (2)

IV. Related Vulnerabilities

Same weakness: CWE-611

V. Comments for CVE-2026-91197

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