Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck

CVE-2026-119598Miaomiaowu before 0.9.3 Cross-User Proxy Provider Config Disclosure via external_subscription_id

Medium 4.3

In plain English

A medium-severity authorization bypass via user-controlled key in miaomiaowu from iluobei. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 71.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
iluobei	miaomiaowu	0 – before 0.9.3

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/iluobei/miaomiaowu/commit/14ccf37ef82cff06b636454c29db7752cdce7cab patch
https://github.com/iluobei/miaomiaowu/issues/131 issue-tracking
https://github.com/iluobei/miaomiaowu/blob/v0.9.2/internal/handler/proxy_provider.go#L114 technical-description
https://github.com/iluobei/miaomiaowu/blob/v0.9.2/internal/storage/traffic.go#L4808 technical-description
miaomiaowu v0.9.3 Release Notes release-notes
https://hackmd.io/@hieuPenguinnn/miaomiaowu-proxy-provider-config-cross-user-idor third-party-advisory
https://github.com/iluobei/miaomiaowu product
VulnCheck Advisory: Miaomiaowu before 0.9.3 Cross-User Proxy Provider Config Disclosure via external_subscription_id third-party-advisory