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CVE-2026-2536— opencc JFlow Workflow WF_Admin_AttrFlow.java Imp_Done xml external entity reference

Quick assessment

Affected
opencc JFlow
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.

JFlow是中国济南驰骋（opencc）开源的一个低代码BPM开发平台。 JFlow 20260129及之前版本存在代码问题漏洞，该漏洞源于对组件Workflow Engine中文件src/main/java/bp/wf/httphandler/WF_Admin_AttrFlow.java的函数Imp_Done的参数File的错误操作，可能导致XML外部实体引用攻击。

CVSS 6.3 · Medium EPSS 0.29% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-2536

Vulnerability Information
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Vulnerability Title
opencc JFlow Workflow WF_Admin_AttrFlow.java Imp_Done xml external entity reference
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in opencc JFlow up to 20260129. This affects the function Imp_Done of the file src/main/java/bp/wf/httphandler/WF_Admin_AttrFlow.java of the component Workflow Engine. This manipulation of the argument File causes xml external entity reference. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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
Vulnerability Title
JFlow 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JFlow是中国济南驰骋（opencc）开源的一个低代码BPM开发平台。 JFlow 20260129及之前版本存在代码问题漏洞，该漏洞源于对组件Workflow Engine中文件src/main/java/bp/wf/httphandler/WF_Admin_AttrFlow.java的函数Imp_Done的参数File的错误操作，可能导致XML外部实体引用攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
opencc JFlow 20260129 -

II. Public POCs for CVE-2026-2536

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III. Intelligence Information for CVE-2026-2536

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Other References for CVE-2026-2536 (1)

IV. Related Vulnerabilities

Same product: JFlow
Same vendor: opencc
Same weakness: CWE-611

V. Comments for CVE-2026-2536

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