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CVE-2026-58448— yudao-cloud < 2026.06 - BPM Module Broken Access Control via process-instance API

Quick assessment

Affected
YunaiV yudao-cloud
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.

YunaiV yudao-cloud是YunaiV个人开发者开源的一个后台管理系统。 yudao-cloud 2026.06之前版本存在授权问题漏洞，该漏洞源于BPM模块中存在访问控制失效，允许通过将攻击者控制的过程实例标识符提交到缺少@PreAuthorize注解的未保护端点，使任何经过身份验证的用户访问任意流程实例记录。攻击者可通过未受保护的GET端点查询任意流程实例ID，读取敏感工作流数据，包括已提交的表单变量、审批者身份、批准和拒绝意见以及流程BPMN XML，而无需验证所有权或租户身份。

CVSS 6.5 · Medium EPSS 0.40% · P33

Possible ATT&CK Techniques 2 AI

T1530 · Data from Cloud Storage T1530.001

Affected Version Matrix 1

VendorProduct Version RangeStatus
YunaiV yudao-cloud < 2026.06 affected
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I. Basic Information for CVE-2026-58448

Vulnerability Information
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Vulnerability Title
yudao-cloud < 2026.06 - BPM Module Broken Access Control via process-instance API
Source: CVE Program / CVE List V5
Vulnerability Description
yudao-cloud before 2026.06 contains a broken access control vulnerability in the BPM module that allows any authenticated user to access arbitrary process instance records by supplying a caller-controlled process-instance identifier to an unprotected endpoint lacking the @PreAuthorize annotation. Attackers can query any process-instance identifier through the unguarded GET endpoint to read sensitive workflow data including submitted form variables, approver identities, approval and rejection comments, and process BPMN XML without ownership or tenant party verification.
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
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
YunaiV yudao-cloud 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
YunaiV yudao-cloud是YunaiV个人开发者开源的一个后台管理系统。 yudao-cloud 2026.06之前版本存在授权问题漏洞，该漏洞源于BPM模块中存在访问控制失效，允许通过将攻击者控制的过程实例标识符提交到缺少@PreAuthorize注解的未保护端点，使任何经过身份验证的用户访问任意流程实例记录。攻击者可通过未受保护的GET端点查询任意流程实例ID，读取敏感工作流数据，包括已提交的表单变量、审批者身份、批准和拒绝意见以及流程BPMN XML，而无需验证所有权或租户身份。
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
YunaiV yudao-cloud 0 ~ 2026.06 -

II. Public POCs for CVE-2026-58448

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III. Intelligence Information for CVE-2026-58448

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Vendor Advisories for CVE-2026-58448 (1)

Proof of Concept for CVE-2026-58448 (1)

IV. Related Vulnerabilities

Same product: yudao-cloud
Same vendor: YunaiV
Same weakness: CWE-862

V. Comments for CVE-2026-58448

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