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Unauthenticated Access to Unpublished Status Page

Moderate
gorkem-bwl published GHSA-57xf-wg6w-fjrr Mar 5, 2026

Package

Checkmate

Affected versions

3.3

Patched versions

3.4.0

Description

An unauthenticated information disclosure vulnerability exists in the GET /api/v1/status-page/:url endpoint.
The endpoint does not enforce authentication or verify whether a status page is published before returning full status page details.

As a result, unpublished status pages and their associated internal data are accessible to any unauthenticated user via direct API requests.

Affected Component:
File: server/src/routes/statusPageRoute.ts
Endpoint: GET /api/v1/status-page/:url?type=uptime

Vulnerability Details

The route handler:

this.router.get("/:url", this.statusPageController.getStatusPageByUrl);

does not use the verifyJWT middleware.

The controller method:

getStatusPageByUrl = async (req, res, next) => {
    const statusPage = await this.statusPageService.getStatusPageByUrl(url);
    return res.json({ data: { statusPage, monitors } });
};

lacks:

  • Authentication checks
  • Validation of the isPublished flag for public access

This allows unauthenticated users to retrieve full status page data, including unpublished pages.

PoC:
Send the following curl command:

curl http://localhost:52347/api/v1/status-page/<status-page-address>?type=uptime

Impact:
Unpublished (private) status pages are exposed publicly, leading to unintended data disclosure.

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVE ID

CVE-2026-30829

Weaknesses

Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Learn more on MITRE.

Credits