# CVE-2026-30829: Checkmate: Unauthenticated Access to Unpublished Status Page

> Unauthenticated attackers can access unpublished status pages and internal data via the API, exposing sensitive monitoring information.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Mar 2026
- **Updated:** 10 Mar 2026
- **Also known as:** GHSA-57xf-wg6w-fjrr

## What is CVE-2026-30829?

CVE-2026-30829 is a medium-severity vulnerability in bluewave-labs Checkmate, published on 7 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. Prior to version 3.4.0, 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 As a result, unpublished status pages and their associated internal data are accessible to any unauthenticated user via direct API requests. This issue has been patched in version 3.4.0.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-30829?

It affects 1 product.


Products: Bluewavelabs Checkmate.

## How do I fix CVE-2026-30829?

No fix has been published for CVE-2026-30829 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30829 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30829 exists.

## Other vulnerabilities in bluewave-labs Checkmate

- [CVE-2026-31836](https://insights.sbomify.com/CVE-2026-31836/): Mass Assignment Privilege Escalation in Checkmate (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30829 and fix it if it is affected.

What it is: CVE-2026-30829 is a medium-severity vulnerability in bluewave-labs Checkmate, published on 7 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30829 exists.

Affected product: bluewave-labs Checkmate. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-30829/ (Markdown: https://insights.sbomify.com/CVE-2026-30829/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30829
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30829
- OSV: https://osv.dev/vulnerability/CVE-2026-30829

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30829/
Summaries are generated and may contain mistakes; the official description above is the record.