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CVE-2026-3813— opencc JFlow WF_CCForm.java Calculate injection

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存在安全漏洞，该漏洞源于对文件src/main/java/bp/wf/httphandler/WF_CCForm.java中函数Calculate的错误操作，可能导致注入攻击。

CVSS 6.3 · Medium EPSS 0.66% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-3813

Vulnerability Information
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Vulnerability Title
opencc JFlow WF_CCForm.java Calculate injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in opencc JFlow up to 5badc00db382d7cb82dad231e6a866b18e0addfe. Affected by this vulnerability is the function Calculate of the file src/main/java/bp/wf/httphandler/WF_CCForm.java. Such manipulation leads to injection. The attack may be performed from remote. The exploit is publicly available and might be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. 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
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
JFlow 安全漏洞
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存在安全漏洞，该漏洞源于对文件src/main/java/bp/wf/httphandler/WF_CCForm.java中函数Calculate的错误操作，可能导致注入攻击。
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 5badc00db382d7cb82dad231e6a866b18e0addfe -

II. Public POCs for CVE-2026-3813

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III. Intelligence Information for CVE-2026-3813

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Vendor Advisories for CVE-2026-3813 (2)

Other References for CVE-2026-3813 (1)

IV. Related Vulnerabilities

Same product: JFlow
Same vendor: opencc
Same weakness: CWE-74

V. Comments for CVE-2026-3813

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