HAX open-apis provides microservice apis for HAX webcomponents repo that are shared infrastructure calls. An unauthenticated information disclosure vulnerability exists in the Penn State University deployment of the HAX content management system via the `haxPsuUsage` API endpoint, related to a flat present in open-apis versions up to and including 10.0.2. This allows any remote unauthenticated user to retrieve a full list of PSU websites hosted on HAX CMS. When chained with other authorization issues (e.g., HAX-3), this could assist in targeted attacks such as unauthorized content modification or deletion. Commit 06c2e1fbb7131a8fe66aa0600f38dcacae6b7ac7 patches the vulnerability.
Affected: npm: @haxtheweb/open-apis
### Summary An **unauthenticated information disclosure vulnerability** exists in the PSU deployment of HAX CMS via the `haxPsuUsage` API endpoint. This allows **any remote unauthenticated user** to retrieve a full list of PSU websites hosted on HAX CMS. When chained with other authorization issues (e.g., HAX-3), this could assist in targeted attacks such as unauthorized content modification or deletion.
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### Details The endpoint [`https://open-apis.hax.cloud/api/services/stats/haxPsuUsage`](https://open-apis.hax.cloud/api/services/stats/haxPsuUsage) returns a list of websites on the PSU instance of HAX CMS. This endpoint is exposed without any authentication or authorization checks.
The source of the issue is in the `haxPsuUsage.js` file, which appears to directly serve the site listing without verifying user identity or access level. This enables anyone with the endpoint URL to enumerate all site instances under the PSU deployment.
This endpoint may have originally been used for internal or statistical purposes but is now publicly accessible, representing a privacy and enumeration risk.
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### PoC To reproduce this vulnerability:
1. Open a terminal or browser. 2. Send a GET request to the following endpoint: ```bash curl https://open-apis.hax.cloud/api/services/stats/haxPsuUsage
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### Impact
The `haxPsuUsage` endpoint exposes a full list of PSU HAX CMS websites to **any unauthenticated user**, allowing external actors to enumerate all sites under the…