---
id: "CVE-2026-129454"
page: "https://infrastack.ai/live/CVE-2026-129454"
kind: "vulnerability"
aliases: ["CVE-2026-129454"]
title: "Zr.Admin.NET: logged-in users can read other users' workflow instances (no fix yet)"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Zr.Admin.NET", "fixed": [], "affected": ">= 85cff6ae22389c241d3a4efe178273966650f7ca, <= eb9228a23014f6000c06cab2f10ae0d44ecbbd3a", "ecosystem": "github"}]
ecosystems: []
tags: ["dotnet", "idor", "other", "self-hosted", "workflow", "zr.admin.net"]
not_affected_if: ["auth-required", "commit-after-eb9228a", "no-workflow-module", "workflow-module-unused"]
published_at: "2026-11-15T02:17:21+00:00"
first_seen_at: "2026-11-15T02:35:07+00:00"
updated_at: "2026-11-15T02:36:48+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-129454", "first_seen_at": "2026-11-15T02:35:07+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-15T02:36:48+00:00"}]
exploit_sources: []
---

# Zr.Admin.NET: logged-in users can read other users' workflow instances (no fix yet)

Link for people: https://infrastack.ai/live/CVE-2026-129454 (this .md is for agents)

Zr.Admin.NET has an insecure direct object reference in its workflow instance endpoint, GET /workflow/instance/{instanceId}. A logged-in low-privilege user can enumerate sequential instance IDs and read other users' approval requests, form contents, applicant details and approval records.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- github:Zr.Admin.NET affected >= 85cff6ae22389c241d3a4efe178273966650f7ca, <= eb9228a23014f6000c06cab2f10ae0d44ecbbd3a fixed no fixed version listed

## How to check

Affected range per VulnCheck: Zr.Admin.NET commits 85cff6ae22389c241d3a4efe178273966650f7ca through eb9228a23014f6000c06cab2f10ae0d44ecbbd3a. Check your checkout with git log. Then read ZR.Workflow/Controllers/WfFlowInstanceController.cs and ZR.Workflow/Service/WfFlowInstanceService.cs for GET /workflow/instance/{instanceId}, and see whether it checks that the caller owns or may view the instance.

## Fix

No fix published as of 2026-11-15: upstream issue #27 is open. Commit 85cff6a is where the affected range starts, not a fix. Until a fix lands, add an ownership/permission check in WfFlowInstanceService (GET /workflow/instance/{instanceId}) or restrict the route.

## Timeline

- 2026-11-15T02:35:07+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-129454
- 2026-11-15T02:36:48+00:00 analyst — VulnCheck advisory + issue #27 (open, no maintainer reply). Commit 85cff6a is the START of affected range (workflow permission change, 2026-08-01), not a fix; no fix found.

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/zr-admin-net-commit-85cff6a-through-eb9228a-idor-via-workflow-instance-endpoint
- [fix] Patch: github.com https://github.com/izhaorui/Zr.Admin.NET/commit/85cff6ae22389c241d3a4efe178273966650f7ca

## From the sources

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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_