Zr.Admin.NET commit 85cff6a through eb9228a IDOR via Workflow Instance Endpoint

Advisories

Zr.Admin.NET commit 85cff6a through eb9228a IDOR via Workflow Instance Endpoint

Severity: high
Date: 11/14/2026
Affecting: Zr.Admin.NET >= 85cff6ae22389c241d3a4efe178273966650f7ca, <= eb9228a23014f6000c06cab2f10ae0d44ecbbd3a
CVE: CVE-2026-129454
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 7.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References: https://vul.yulun.ac.cn/20261114/zr-admin-net/
https://github.com/izhaorui/Zr.Admin.NET/issues/27
https://github.com/izhaorui/Zr.Admin.NET/blob/eb9228a23014f6000c06cab2f10ae0d44ecbbd3a/ZR.Workflow/Controllers/WfFlowInstanceController.cs#L49-L57
https://github.com/izhaorui/Zr.Admin.NET/blob/eb9228a23014f6000c06cab2f10ae0d44ecbbd3a/ZR.Workflow/Service/WfFlowInstanceService.cs#L173-L176
https://github.com/izhaorui/Zr.Admin.NET/commit/85cff6ae22389c241d3a4efe178273966650f7ca
Credit: Wu Yulun
Description: Zr.Admin.NET commit 85cff6a through commit eb9228a contains an insecure direct object reference vulnerability in GET /workflow/instance/{instanceId} that lets logged-in users view others' workflow instances. Authenticated low-privilege attackers can enumerate sequential instance IDs to read other users' approval requests, including submitted form contents, applicant details and approval records.

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